// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "android_webview/native/aw_contents.h"

#include <limits>
#include <utility>

#include "android_webview/browser/aw_browser_context.h"
#include "android_webview/browser/aw_browser_main_parts.h"
#include "android_webview/browser/aw_resource_context.h"
#include "android_webview/browser/browser_view_renderer.h"
#include "android_webview/browser/deferred_gpu_command_service.h"
#include "android_webview/browser/net_disk_cache_remover.h"
#include "android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h"
#include "android_webview/browser/scoped_app_gl_state_restore.h"
#include "android_webview/browser/shared_renderer_state.h"
#include "android_webview/common/aw_hit_test_data.h"
#include "android_webview/common/aw_switches.h"
#include "android_webview/common/devtools_instrumentation.h"
#include "android_webview/native/aw_autofill_client.h"
#include "android_webview/native/aw_browser_dependency_factory.h"
#include "android_webview/native/aw_contents_client_bridge.h"
#include "android_webview/native/aw_contents_io_thread_client_impl.h"
#include "android_webview/native/aw_contents_lifecycle_notifier.h"
#include "android_webview/native/aw_message_port_service_impl.h"
#include "android_webview/native/aw_pdf_exporter.h"
#include "android_webview/native/aw_picture.h"
#include "android_webview/native/aw_web_contents_delegate.h"
#include "android_webview/native/java_browser_view_renderer_helper.h"
#include "android_webview/native/permission/aw_permission_request.h"
#include "android_webview/native/permission/permission_request_handler.h"
#include "android_webview/native/permission/simple_permission_request.h"
#include "android_webview/native/state_serializer.h"
#include "android_webview/public/browser/draw_gl.h"
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/android/locale_utils.h"
#include "base/android/scoped_java_ref.h"
#include "base/atomicops.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/command_line.h"
#include "base/memory/memory_pressure_listener.h"
#include "base/message_loop/message_loop.h"
#include "base/pickle.h"
#include "base/strings/string16.h"
#include "base/supports_user_data.h"
#include "components/autofill/content/browser/content_autofill_driver_factory.h"
#include "components/autofill/core/browser/autofill_manager.h"
#include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h"
#include "components/navigation_interception/intercept_navigation_delegate.h"
#include "content/public/browser/android/content_view_core.h"
#include "content/public/browser/android/synchronous_compositor.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/cert_store.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/favicon_status.h"
#include "content/public/browser/message_port_provider.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/message_port_types.h"
#include "content/public/common/renderer_preferences.h"
#include "content/public/common/ssl_status.h"
#include "jni/AwContents_jni.h"
#include "net/base/auth.h"
#include "net/cert/x509_certificate.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "ui/gfx/android/java_bitmap.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image.h"

struct AwDrawSWFunctionTable;

using autofill::ContentAutofillDriverFactory;
using autofill::AutofillManager;
using base::android::AttachCurrentThread;
using base::android::ConvertJavaStringToUTF16;
using base::android::ConvertJavaStringToUTF8;
using base::android::ConvertUTF16ToJavaString;
using base::android::ConvertUTF8ToJavaString;
using base::android::JavaRef;
using base::android::ScopedJavaGlobalRef;
using base::android::ScopedJavaLocalRef;
using data_reduction_proxy::DataReductionProxySettings;
using navigation_interception::InterceptNavigationDelegate;
using content::BrowserThread;
using content::ContentViewCore;
using content::WebContents;

extern "C" {
static AwDrawGLFunction DrawGLFunction;
static void DrawGLFunction(long view_context,
                           AwDrawGLInfo* draw_info,
                           void* spare) {
  // |view_context| is the value that was returned from the java
  // AwContents.onPrepareDrawGL; this cast must match the code there.
  reinterpret_cast<android_webview::SharedRendererState*>(view_context)
      ->DrawGL(draw_info);
}
}

namespace android_webview {

namespace {

bool g_should_download_favicons = false;

bool g_force_auxiliary_bitmap_rendering = false;

std::string g_locale;

const void* kAwContentsUserDataKey = &kAwContentsUserDataKey;

class AwContentsUserData : public base::SupportsUserData::Data {
 public:
  explicit AwContentsUserData(AwContents* ptr) : contents_(ptr) {}

  static AwContents* GetContents(WebContents* web_contents) {
    if (!web_contents)
      return NULL;
    AwContentsUserData* data = static_cast<AwContentsUserData*>(
        web_contents->GetUserData(kAwContentsUserDataKey));
    return data ? data->contents_ : NULL;
  }

 private:
  AwContents* contents_;
};

base::subtle::Atomic32 g_instance_count = 0;

void OnIoThreadClientReady(content::RenderFrameHost* rfh) {
  int render_process_id = rfh->GetProcess()->GetID();
  int render_frame_id = rfh->GetRoutingID();
  AwResourceDispatcherHostDelegate::OnIoThreadClientReady(
      render_process_id, render_frame_id);
}

}  // namespace

// static
AwContents* AwContents::FromWebContents(WebContents* web_contents) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  return AwContentsUserData::GetContents(web_contents);
}

// static
AwContents* AwContents::FromID(int render_process_id, int render_view_id) {
  content::RenderViewHost* rvh =
      content::RenderViewHost::FromID(render_process_id, render_view_id);
  if (!rvh) return NULL;
  content::WebContents* web_contents =
      content::WebContents::FromRenderViewHost(rvh);
  if (!web_contents) return NULL;
  return FromWebContents(web_contents);
}

// static
void SetLocale(JNIEnv* env,
               const JavaParamRef<jclass>&,
               const JavaParamRef<jstring>& locale) {
  g_locale = ConvertJavaStringToUTF8(env, locale);
}

// static
std::string AwContents::GetLocale() {
  return g_locale;
}

// static
AwBrowserPermissionRequestDelegate* AwBrowserPermissionRequestDelegate::FromID(
    int render_process_id, int render_frame_id) {
  AwContents* aw_contents = AwContents::FromWebContents(
      content::WebContents::FromRenderFrameHost(
          content::RenderFrameHost::FromID(render_process_id,
                                           render_frame_id)));
  return aw_contents;
}

AwContents::AwContents(scoped_ptr<WebContents> web_contents)
    : browser_view_renderer_(
          this,
          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
          base::CommandLine::ForCurrentProcess()->HasSwitch(
              switches::kDisablePageVisibility)),
      web_contents_(std::move(web_contents)),
      renderer_manager_key_(GLViewRendererManager::GetInstance()->NullKey()) {
  base::subtle::NoBarrier_AtomicIncrement(&g_instance_count, 1);
  icon_helper_.reset(new IconHelper(web_contents_.get()));
  icon_helper_->SetListener(this);
  web_contents_->SetUserData(android_webview::kAwContentsUserDataKey,
                             new AwContentsUserData(this));
  browser_view_renderer_.RegisterWithWebContents(web_contents_.get());
  render_view_host_ext_.reset(
      new AwRenderViewHostExt(this, web_contents_.get()));

  permission_request_handler_.reset(
      new PermissionRequestHandler(this, web_contents_.get()));

  AwAutofillClient* autofill_manager_delegate =
      AwAutofillClient::FromWebContents(web_contents_.get());
  if (autofill_manager_delegate)
    InitAutofillIfNecessary(autofill_manager_delegate->GetSaveFormData());
  content::SynchronousCompositor::SetClientForWebContents(
      web_contents_.get(), &browser_view_renderer_);
  AwContentsLifecycleNotifier::OnWebViewCreated();
}

void AwContents::SetJavaPeers(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj,
    const JavaParamRef<jobject>& aw_contents,
    const JavaParamRef<jobject>& web_contents_delegate,
    const JavaParamRef<jobject>& contents_client_bridge,
    const JavaParamRef<jobject>& io_thread_client,
    const JavaParamRef<jobject>& intercept_navigation_delegate) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  // The |aw_content| param is technically spurious as it duplicates |obj| but
  // is passed over anyway to make the binding more explicit.
  java_ref_ = JavaObjectWeakGlobalRef(env, aw_contents);

  web_contents_delegate_.reset(
      new AwWebContentsDelegate(env, web_contents_delegate));
  web_contents_->SetDelegate(web_contents_delegate_.get());

  contents_client_bridge_.reset(
      new AwContentsClientBridge(env, contents_client_bridge));
  AwContentsClientBridgeBase::Associate(web_contents_.get(),
                                        contents_client_bridge_.get());

  AwContentsIoThreadClientImpl::Associate(web_contents_.get(),
                                          io_thread_client);

  InterceptNavigationDelegate::Associate(
      web_contents_.get(),
      make_scoped_ptr(new InterceptNavigationDelegate(
          env, intercept_navigation_delegate)));

  // Finally, having setup the associations, release any deferred requests
  web_contents_->ForEachFrame(base::Bind(&OnIoThreadClientReady));
}

void AwContents::SetSaveFormData(bool enabled) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  InitAutofillIfNecessary(enabled);
  // We need to check for the existence, since autofill_manager_delegate
  // may not be created when the setting is false.
  if (AwAutofillClient::FromWebContents(web_contents_.get())) {
    AwAutofillClient::FromWebContents(web_contents_.get())->
        SetSaveFormData(enabled);
  }
}

void AwContents::InitAutofillIfNecessary(bool enabled) {
  // Do not initialize if the feature is not enabled.
  if (!enabled)
    return;
  // Check if the autofill driver factory already exists.
  content::WebContents* web_contents = web_contents_.get();
  if (ContentAutofillDriverFactory::FromWebContents(web_contents))
    return;

  AwAutofillClient::CreateForWebContents(web_contents);
  ContentAutofillDriverFactory::CreateForWebContentsAndDelegate(
      web_contents, AwAutofillClient::FromWebContents(web_contents),
      base::android::GetDefaultLocale(),
      AutofillManager::DISABLE_AUTOFILL_DOWNLOAD_MANAGER);
}

void AwContents::SetAwAutofillClient(jobject client) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;
  Java_AwContents_setAwAutofillClient(env, obj.obj(), client);
}

AwContents::~AwContents() {
  DCHECK_EQ(this, AwContents::FromWebContents(web_contents_.get()));
  web_contents_->RemoveUserData(kAwContentsUserDataKey);
  if (find_helper_.get())
    find_helper_->SetListener(NULL);
  if (icon_helper_.get())
    icon_helper_->SetListener(NULL);
  base::subtle::Atomic32 instance_count =
      base::subtle::NoBarrier_AtomicIncrement(&g_instance_count, -1);
  // When the last WebView is destroyed free all discardable memory allocated by
  // Chromium, because the app process may continue to run for a long time
  // without ever using another WebView.
  if (instance_count == 0) {
    // TODO(timvolodine): consider moving NotifyMemoryPressure to
    // AwContentsLifecycleNotifier (crbug.com/522988).
    base::MemoryPressureListener::NotifyMemoryPressure(
        base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
  }
  AwContentsLifecycleNotifier::OnWebViewDestroyed();
}

base::android::ScopedJavaLocalRef<jobject> AwContents::GetWebContents(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  DCHECK(web_contents_);
  if (!web_contents_)
    return base::android::ScopedJavaLocalRef<jobject>();

  return web_contents_->GetJavaWebContents();
}

void AwContents::Destroy(JNIEnv* env, const JavaParamRef<jobject>& obj) {
  java_ref_.reset();
  delete this;
}

static jlong Init(JNIEnv* env,
                  const JavaParamRef<jclass>&,
                  const JavaParamRef<jobject>& browser_context) {
  // TODO(joth): Use |browser_context| to get the native BrowserContext, rather
  // than hard-code the default instance lookup here.
  scoped_ptr<WebContents> web_contents(content::WebContents::Create(
      content::WebContents::CreateParams(AwBrowserContext::GetDefault())));
  // Return an 'uninitialized' instance; most work is deferred until the
  // subsequent SetJavaPeers() call.
  return reinterpret_cast<intptr_t>(new AwContents(std::move(web_contents)));
}

static void SetForceAuxiliaryBitmapRendering(
    JNIEnv* env,
    const JavaParamRef<jclass>&,
    jboolean force_auxiliary_bitmap_rendering) {
  g_force_auxiliary_bitmap_rendering = force_auxiliary_bitmap_rendering;
}

static void SetAwDrawSWFunctionTable(JNIEnv* env,
                                     const JavaParamRef<jclass>&,
                                     jlong function_table) {
  RasterHelperSetAwDrawSWFunctionTable(
      reinterpret_cast<AwDrawSWFunctionTable*>(function_table));
}

static void SetAwDrawGLFunctionTable(JNIEnv* env,
                                     const JavaParamRef<jclass>&,
                                     jlong function_table) {}

static jlong GetAwDrawGLFunction(JNIEnv* env, const JavaParamRef<jclass>&) {
  return reinterpret_cast<intptr_t>(&DrawGLFunction);
}

// static
jint GetNativeInstanceCount(JNIEnv* env, const JavaParamRef<jclass>&) {
  return base::subtle::NoBarrier_Load(&g_instance_count);
}

jlong AwContents::GetAwDrawGLViewContext(JNIEnv* env,
                                         const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  return reinterpret_cast<intptr_t>(
      browser_view_renderer_.GetAwDrawGLViewContext());
}

namespace {
void DocumentHasImagesCallback(const ScopedJavaGlobalRef<jobject>& message,
                               bool has_images) {
  Java_AwContents_onDocumentHasImagesResponse(AttachCurrentThread(),
                                              has_images,
                                              message.obj());
}
}  // namespace

void AwContents::DocumentHasImages(JNIEnv* env,
                                   const JavaParamRef<jobject>& obj,
                                   const JavaParamRef<jobject>& message) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  ScopedJavaGlobalRef<jobject> j_message;
  j_message.Reset(env, message);
  render_view_host_ext_->DocumentHasImages(
      base::Bind(&DocumentHasImagesCallback, j_message));
}

namespace {
void GenerateMHTMLCallback(ScopedJavaGlobalRef<jobject>* callback,
                           const base::FilePath& path,
                           int64_t size) {
  JNIEnv* env = AttachCurrentThread();
  // Android files are UTF8, so the path conversion below is safe.
  Java_AwContents_generateMHTMLCallback(
      env,
      ConvertUTF8ToJavaString(env, path.AsUTF8Unsafe()).obj(),
      size, callback->obj());
}
}  // namespace

void AwContents::GenerateMHTML(JNIEnv* env,
                               const JavaParamRef<jobject>& obj,
                               const JavaParamRef<jstring>& jpath,
                               const JavaParamRef<jobject>& callback) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  ScopedJavaGlobalRef<jobject>* j_callback = new ScopedJavaGlobalRef<jobject>();
  j_callback->Reset(env, callback);
  base::FilePath target_path(ConvertJavaStringToUTF8(env, jpath));
  web_contents_->GenerateMHTML(
      target_path,
      base::Bind(&GenerateMHTMLCallback, base::Owned(j_callback), target_path));
}

void AwContents::CreatePdfExporter(JNIEnv* env,
                                   const JavaParamRef<jobject>& obj,
                                   const JavaParamRef<jobject>& pdfExporter) {
  pdf_exporter_.reset(
      new AwPdfExporter(env,
                        pdfExporter,
                        web_contents_.get()));
}

bool AwContents::OnReceivedHttpAuthRequest(const JavaRef<jobject>& handler,
                                           const std::string& host,
                                           const std::string& realm) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return false;

  ScopedJavaLocalRef<jstring> jhost = ConvertUTF8ToJavaString(env, host);
  ScopedJavaLocalRef<jstring> jrealm = ConvertUTF8ToJavaString(env, realm);
  devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
      "onReceivedHttpAuthRequest");
  Java_AwContents_onReceivedHttpAuthRequest(env, obj.obj(), handler.obj(),
      jhost.obj(), jrealm.obj());
  return true;
}

void AwContents::SetOffscreenPreRaster(bool enabled) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.SetOffscreenPreRaster(enabled);
}

void AwContents::AddVisitedLinks(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj,
    const JavaParamRef<jobjectArray>& jvisited_links) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  std::vector<base::string16> visited_link_strings;
  base::android::AppendJavaStringArrayToStringVector(
      env, jvisited_links, &visited_link_strings);

  std::vector<GURL> visited_link_gurls;
  std::vector<base::string16>::const_iterator itr;
  for (itr = visited_link_strings.begin(); itr != visited_link_strings.end();
       ++itr) {
    visited_link_gurls.push_back(GURL(*itr));
  }

  AwBrowserContext::FromWebContents(web_contents_.get())
      ->AddVisitedURLs(visited_link_gurls);
}

bool RegisterAwContents(JNIEnv* env) {
  return RegisterNativesImpl(env);
}

namespace {

void ShowGeolocationPromptHelperTask(const JavaObjectWeakGlobalRef& java_ref,
                                     const GURL& origin) {
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> j_ref = java_ref.get(env);
  if (j_ref.obj()) {
    ScopedJavaLocalRef<jstring> j_origin(
        ConvertUTF8ToJavaString(env, origin.spec()));
    devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
        "onGeolocationPermissionsShowPrompt");
    Java_AwContents_onGeolocationPermissionsShowPrompt(env,
                                                       j_ref.obj(),
                                                       j_origin.obj());
  }
}

void ShowGeolocationPromptHelper(const JavaObjectWeakGlobalRef& java_ref,
                                 const GURL& origin) {
  JNIEnv* env = AttachCurrentThread();
  if (java_ref.get(env).obj()) {
    content::BrowserThread::PostTask(
        content::BrowserThread::UI,
        FROM_HERE,
        base::Bind(&ShowGeolocationPromptHelperTask,
                   java_ref,
                   origin));
  }
}

} // anonymous namespace

void AwContents::ShowGeolocationPrompt(const GURL& requesting_frame,
                                       base::Callback<void(bool)> callback) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);

  GURL origin = requesting_frame.GetOrigin();
  bool show_prompt = pending_geolocation_prompts_.empty();
  pending_geolocation_prompts_.push_back(OriginCallback(origin, callback));
  if (show_prompt) {
    ShowGeolocationPromptHelper(java_ref_, origin);
  }
}

// Invoked from Java
void AwContents::InvokeGeolocationCallback(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj,
    jboolean value,
    const JavaParamRef<jstring>& origin) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  if (pending_geolocation_prompts_.empty())
    return;

  GURL callback_origin(base::android::ConvertJavaStringToUTF16(env, origin));
  if (callback_origin.GetOrigin() ==
      pending_geolocation_prompts_.front().first) {
    pending_geolocation_prompts_.front().second.Run(value);
    pending_geolocation_prompts_.pop_front();
    if (!pending_geolocation_prompts_.empty()) {
      ShowGeolocationPromptHelper(java_ref_,
                                  pending_geolocation_prompts_.front().first);
    }
  }
}

void AwContents::HideGeolocationPrompt(const GURL& origin) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  bool removed_current_outstanding_callback = false;
  std::list<OriginCallback>::iterator it = pending_geolocation_prompts_.begin();
  while (it != pending_geolocation_prompts_.end()) {
    if ((*it).first == origin.GetOrigin()) {
      if (it == pending_geolocation_prompts_.begin()) {
        removed_current_outstanding_callback = true;
      }
      it = pending_geolocation_prompts_.erase(it);
    } else {
      ++it;
    }
  }

  if (removed_current_outstanding_callback) {
    JNIEnv* env = AttachCurrentThread();
    ScopedJavaLocalRef<jobject> j_ref = java_ref_.get(env);
    if (j_ref.obj()) {
      devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
          "onGeolocationPermissionsHidePrompt");
      Java_AwContents_onGeolocationPermissionsHidePrompt(env, j_ref.obj());
    }
    if (!pending_geolocation_prompts_.empty()) {
      ShowGeolocationPromptHelper(java_ref_,
                            pending_geolocation_prompts_.front().first);
    }
  }
}

void AwContents::OnPermissionRequest(
    base::android::ScopedJavaLocalRef<jobject> j_request,
    AwPermissionRequest* request) {
  DCHECK(!j_request.is_null());
  DCHECK(request);

  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> j_ref = java_ref_.get(env);
  if (j_ref.is_null()) {
    permission_request_handler_->CancelRequest(request->GetOrigin(),
                                               request->GetResources());
    return;
  }

  Java_AwContents_onPermissionRequest(env, j_ref.obj(), j_request.obj());
}

void AwContents::OnPermissionRequestCanceled(AwPermissionRequest* request) {
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> j_request = request->GetJavaObject();
  ScopedJavaLocalRef<jobject> j_ref = java_ref_.get(env);
  if (j_request.is_null() || j_ref.is_null())
    return;

  Java_AwContents_onPermissionRequestCanceled(
      env, j_ref.obj(), j_request.obj());
}

void AwContents::PreauthorizePermission(JNIEnv* env,
                                        const JavaParamRef<jobject>& obj,
                                        const JavaParamRef<jstring>& origin,
                                        jlong resources) {
  permission_request_handler_->PreauthorizePermission(
      GURL(base::android::ConvertJavaStringToUTF8(env, origin)), resources);
}

void AwContents::RequestProtectedMediaIdentifierPermission(
    const GURL& origin,
    const base::Callback<void(bool)>& callback) {
  permission_request_handler_->SendRequest(
      scoped_ptr<AwPermissionRequestDelegate>(new SimplePermissionRequest(
          origin, AwPermissionRequest::ProtectedMediaId, callback)));
}

void AwContents::CancelProtectedMediaIdentifierPermissionRequests(
    const GURL& origin) {
  permission_request_handler_->CancelRequest(
      origin, AwPermissionRequest::ProtectedMediaId);
}

void AwContents::RequestGeolocationPermission(
    const GURL& origin,
    const base::Callback<void(bool)>& callback) {
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;

  if (Java_AwContents_useLegacyGeolocationPermissionAPI(env, obj.obj())) {
    ShowGeolocationPrompt(origin, callback);
    return;
  }
  permission_request_handler_->SendRequest(
      scoped_ptr<AwPermissionRequestDelegate>(new SimplePermissionRequest(
          origin, AwPermissionRequest::Geolocation, callback)));
}

void AwContents::CancelGeolocationPermissionRequests(const GURL& origin) {
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;

  if (Java_AwContents_useLegacyGeolocationPermissionAPI(env, obj.obj())) {
    HideGeolocationPrompt(origin);
    return;
  }
  permission_request_handler_->CancelRequest(
      origin, AwPermissionRequest::Geolocation);
}

void AwContents::RequestMIDISysexPermission(
    const GURL& origin,
    const base::Callback<void(bool)>& callback) {
  permission_request_handler_->SendRequest(
      scoped_ptr<AwPermissionRequestDelegate>(new SimplePermissionRequest(
          origin, AwPermissionRequest::MIDISysex, callback)));
}

void AwContents::CancelMIDISysexPermissionRequests(const GURL& origin) {
  permission_request_handler_->CancelRequest(
      origin, AwPermissionRequest::AwPermissionRequest::MIDISysex);
}

void AwContents::FindAllAsync(JNIEnv* env,
                              const JavaParamRef<jobject>& obj,
                              const JavaParamRef<jstring>& search_string) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  GetFindHelper()->FindAllAsync(ConvertJavaStringToUTF16(env, search_string));
}

void AwContents::FindNext(JNIEnv* env,
                          const JavaParamRef<jobject>& obj,
                          jboolean forward) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  GetFindHelper()->FindNext(forward);
}

void AwContents::ClearMatches(JNIEnv* env, const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  GetFindHelper()->ClearMatches();
}

void AwContents::ClearCache(JNIEnv* env,
                            const JavaParamRef<jobject>& obj,
                            jboolean include_disk_files) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  render_view_host_ext_->ClearCache();

  if (include_disk_files) {
    RemoveHttpDiskCache(web_contents_->GetBrowserContext(),
                        web_contents_->GetRoutingID());
  }
}

FindHelper* AwContents::GetFindHelper() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  if (!find_helper_.get()) {
    find_helper_.reset(new FindHelper(web_contents_.get()));
    find_helper_->SetListener(this);
  }
  return find_helper_.get();
}

void AwContents::OnFindResultReceived(int active_ordinal,
                                      int match_count,
                                      bool finished) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;

  Java_AwContents_onFindResultReceived(
      env, obj.obj(), active_ordinal, match_count, finished);
}

bool AwContents::ShouldDownloadFavicon(const GURL& icon_url) {
  return g_should_download_favicons;
}

void AwContents::OnReceivedIcon(const GURL& icon_url, const SkBitmap& bitmap) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;

  content::NavigationEntry* entry =
      web_contents_->GetController().GetLastCommittedEntry();

  if (entry) {
    entry->GetFavicon().valid = true;
    entry->GetFavicon().url = icon_url;
    entry->GetFavicon().image = gfx::Image::CreateFrom1xBitmap(bitmap);
  }

  Java_AwContents_onReceivedIcon(
      env, obj.obj(), gfx::ConvertToJavaBitmap(&bitmap).obj());
}

void AwContents::OnReceivedTouchIconUrl(const std::string& url,
                                        bool precomposed) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;

  Java_AwContents_onReceivedTouchIconUrl(
      env, obj.obj(), ConvertUTF8ToJavaString(env, url).obj(), precomposed);
}

bool AwContents::RequestDrawGL(bool wait_for_completion) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return false;
  return Java_AwContents_requestDrawGL(env, obj.obj(), wait_for_completion);
}

void AwContents::PostInvalidate() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (!obj.is_null())
    Java_AwContents_postInvalidateOnAnimation(env, obj.obj());
}

void AwContents::OnNewPicture() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (!obj.is_null()) {
    devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
        "onNewPicture");
    Java_AwContents_onNewPicture(env, obj.obj());
  }
}

base::android::ScopedJavaLocalRef<jbyteArray> AwContents::GetCertificate(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  content::NavigationEntry* entry =
      web_contents_->GetController().GetLastCommittedEntry();
  if (!entry)
    return ScopedJavaLocalRef<jbyteArray>();
  // Get the certificate
  int cert_id = entry->GetSSL().cert_id;
  scoped_refptr<net::X509Certificate> cert;
  bool ok = content::CertStore::GetInstance()->RetrieveCert(cert_id, &cert);
  if (!ok)
    return ScopedJavaLocalRef<jbyteArray>();

  // Convert the certificate and return it
  std::string der_string;
  net::X509Certificate::GetDEREncoded(cert->os_cert_handle(), &der_string);
  return base::android::ToJavaByteArray(
      env, reinterpret_cast<const uint8_t*>(der_string.data()),
      der_string.length());
}

void AwContents::RequestNewHitTestDataAt(JNIEnv* env,
                                         const JavaParamRef<jobject>& obj,
                                         jfloat x,
                                         jfloat y,
                                         jfloat touch_major) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  gfx::PointF touch_center(x, y);
  gfx::SizeF touch_area(touch_major, touch_major);
  render_view_host_ext_->RequestNewHitTestDataAt(touch_center, touch_area);
}

void AwContents::UpdateLastHitTestData(JNIEnv* env,
                                       const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  if (!render_view_host_ext_->HasNewHitTestData()) return;

  const AwHitTestData& data = render_view_host_ext_->GetLastHitTestData();
  render_view_host_ext_->MarkHitTestDataRead();

  // Make sure to null the Java object if data is empty/invalid.
  ScopedJavaLocalRef<jstring> extra_data_for_type;
  if (data.extra_data_for_type.length())
    extra_data_for_type = ConvertUTF8ToJavaString(
        env, data.extra_data_for_type);

  ScopedJavaLocalRef<jstring> href;
  if (data.href.length())
    href = ConvertUTF16ToJavaString(env, data.href);

  ScopedJavaLocalRef<jstring> anchor_text;
  if (data.anchor_text.length())
    anchor_text = ConvertUTF16ToJavaString(env, data.anchor_text);

  ScopedJavaLocalRef<jstring> img_src;
  if (data.img_src.is_valid())
    img_src = ConvertUTF8ToJavaString(env, data.img_src.spec());

  Java_AwContents_updateHitTestData(env,
                                    obj,
                                    data.type,
                                    extra_data_for_type.obj(),
                                    href.obj(),
                                    anchor_text.obj(),
                                    img_src.obj());
}

void AwContents::OnSizeChanged(JNIEnv* env,
                               const JavaParamRef<jobject>& obj,
                               int w,
                               int h,
                               int ow,
                               int oh) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.OnSizeChanged(w, h);
}

void AwContents::SetViewVisibility(JNIEnv* env,
                                   const JavaParamRef<jobject>& obj,
                                   bool visible) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.SetViewVisibility(visible);
}

void AwContents::SetWindowVisibility(JNIEnv* env,
                                     const JavaParamRef<jobject>& obj,
                                     bool visible) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.SetWindowVisibility(visible);
}

void AwContents::SetIsPaused(JNIEnv* env,
                             const JavaParamRef<jobject>& obj,
                             bool paused) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.SetIsPaused(paused);
  ContentViewCore* cvc =
      ContentViewCore::FromWebContents(web_contents_.get());
  if (cvc) {
    cvc->PauseOrResumeGeolocation(paused);
  }
}

void AwContents::OnAttachedToWindow(JNIEnv* env,
                                    const JavaParamRef<jobject>& obj,
                                    int w,
                                    int h) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.OnAttachedToWindow(w, h);
}

void AwContents::OnDetachedFromWindow(JNIEnv* env,
                                      const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.OnDetachedFromWindow();
}

bool AwContents::IsVisible(JNIEnv* env, const JavaParamRef<jobject>& obj) {
  return browser_view_renderer_.IsClientVisible();
}

void AwContents::DetachFunctorFromView() {
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (!obj.is_null())
    Java_AwContents_detachFunctorFromView(env, obj.obj());
}

base::android::ScopedJavaLocalRef<jbyteArray> AwContents::GetOpaqueState(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  // Required optimization in WebViewClassic to not save any state if
  // there has been no navigations.
  if (!web_contents_->GetController().GetEntryCount())
    return ScopedJavaLocalRef<jbyteArray>();

  base::Pickle pickle;
  if (!WriteToPickle(*web_contents_, &pickle)) {
    return ScopedJavaLocalRef<jbyteArray>();
  } else {
    return base::android::ToJavaByteArray(
        env, reinterpret_cast<const uint8_t*>(pickle.data()), pickle.size());
  }
}

jboolean AwContents::RestoreFromOpaqueState(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj,
    const JavaParamRef<jbyteArray>& state) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  // TODO(boliu): This copy can be optimized out if this is a performance
  // problem.
  std::vector<uint8_t> state_vector;
  base::android::JavaByteArrayToByteVector(env, state, &state_vector);

  base::Pickle pickle(reinterpret_cast<const char*>(state_vector.data()),
                      state_vector.size());
  base::PickleIterator iterator(pickle);

  return RestoreFromPickle(&iterator, web_contents_.get());
}

bool AwContents::OnDraw(JNIEnv* env,
                        const JavaParamRef<jobject>& obj,
                        const JavaParamRef<jobject>& canvas,
                        jboolean is_hardware_accelerated,
                        jint scroll_x,
                        jint scroll_y,
                        jint visible_left,
                        jint visible_top,
                        jint visible_right,
                        jint visible_bottom) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  gfx::Vector2d scroll(scroll_x, scroll_y);
  browser_view_renderer_.PrepareToDraw(
      scroll, gfx::Rect(visible_left, visible_top, visible_right - visible_left,
                        visible_bottom - visible_top));
  if (is_hardware_accelerated && browser_view_renderer_.attached_to_window() &&
      !g_force_auxiliary_bitmap_rendering) {
    return browser_view_renderer_.OnDrawHardware();
  }

  gfx::Size view_size = browser_view_renderer_.size();
  if (view_size.IsEmpty()) {
    TRACE_EVENT_INSTANT0("android_webview", "EarlyOut_EmptySize",
                         TRACE_EVENT_SCOPE_THREAD);
    return false;
  }

  // TODO(hush): Right now webview size is passed in as the auxiliary bitmap
  // size, which might hurt performace (only for software draws with auxiliary
  // bitmap). For better performance, get global visible rect, transform it
  // from screen space to view space, then intersect with the webview in
  // viewspace.  Use the resulting rect as the auxiliary bitmap.
  scoped_ptr<SoftwareCanvasHolder> canvas_holder = SoftwareCanvasHolder::Create(
      canvas, scroll, view_size, g_force_auxiliary_bitmap_rendering);
  if (!canvas_holder || !canvas_holder->GetCanvas()) {
    TRACE_EVENT_INSTANT0("android_webview", "EarlyOut_NoSoftwareCanvas",
                         TRACE_EVENT_SCOPE_THREAD);
    return false;
  }
  return browser_view_renderer_.OnDrawSoftware(canvas_holder->GetCanvas());
}

void AwContents::SetPendingWebContentsForPopup(
    scoped_ptr<content::WebContents> pending) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  if (pending_contents_.get()) {
    // TODO(benm): Support holding multiple pop up window requests.
    LOG(WARNING) << "Blocking popup window creation as an outstanding "
                 << "popup window is still pending.";
    base::MessageLoop::current()->DeleteSoon(FROM_HERE, pending.release());
    return;
  }
  pending_contents_.reset(new AwContents(std::move(pending)));
  // Set dip_scale for pending contents, which is necessary for the later
  // SynchronousCompositor and InputHandler setup.
  pending_contents_->SetDipScaleInternal(browser_view_renderer_.dip_scale());
}

void AwContents::FocusFirstNode(JNIEnv* env, const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  web_contents_->FocusThroughTabTraversal(false);
}

void AwContents::SetBackgroundColor(JNIEnv* env,
                                    const JavaParamRef<jobject>& obj,
                                    jint color) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  render_view_host_ext_->SetBackgroundColor(color);
}

void AwContents::OnComputeScroll(JNIEnv* env,
                                 const JavaParamRef<jobject>& obj,
                                 jlong animation_time_millis) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.OnComputeScroll(
      base::TimeTicks() +
      base::TimeDelta::FromMilliseconds(animation_time_millis));
}

jlong AwContents::ReleasePopupAwContents(JNIEnv* env,
                                         const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  return reinterpret_cast<intptr_t>(pending_contents_.release());
}

gfx::Point AwContents::GetLocationOnScreen() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return gfx::Point();
  std::vector<int> location;
  base::android::JavaIntArrayToIntVector(
      env,
      Java_AwContents_getLocationOnScreen(env, obj.obj()).obj(),
      &location);
  return gfx::Point(location[0], location[1]);
}

void AwContents::ScrollContainerViewTo(const gfx::Vector2d& new_value) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;
  Java_AwContents_scrollContainerViewTo(
      env, obj.obj(), new_value.x(), new_value.y());
}

void AwContents::UpdateScrollState(const gfx::Vector2d& max_scroll_offset,
                                   const gfx::SizeF& contents_size_dip,
                                   float page_scale_factor,
                                   float min_page_scale_factor,
                                   float max_page_scale_factor) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;
  Java_AwContents_updateScrollState(env,
                                    obj.obj(),
                                    max_scroll_offset.x(),
                                    max_scroll_offset.y(),
                                    contents_size_dip.width(),
                                    contents_size_dip.height(),
                                    page_scale_factor,
                                    min_page_scale_factor,
                                    max_page_scale_factor);
}

void AwContents::DidOverscroll(const gfx::Vector2d& overscroll_delta,
                               const gfx::Vector2dF& overscroll_velocity) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;
  Java_AwContents_didOverscroll(env, obj.obj(), overscroll_delta.x(),
                                overscroll_delta.y(), overscroll_velocity.x(),
                                overscroll_velocity.y());
}

void AwContents::SetDipScale(JNIEnv* env,
                             const JavaParamRef<jobject>& obj,
                             jfloat dip_scale) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  SetDipScaleInternal(dip_scale);
}

void AwContents::SetDipScaleInternal(float dip_scale) {
  browser_view_renderer_.SetDipScale(dip_scale);
}

void AwContents::ScrollTo(JNIEnv* env,
                          const JavaParamRef<jobject>& obj,
                          jint x,
                          jint y) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.ScrollTo(gfx::Vector2d(x, y));
}

void AwContents::SmoothScroll(JNIEnv* env,
                              const JavaParamRef<jobject>& obj,
                              jint target_x,
                              jint target_y,
                              jlong duration_ms) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);

  float scale = browser_view_renderer_.dip_scale() *
                browser_view_renderer_.page_scale_factor();
  render_view_host_ext_->SmoothScroll(target_x / scale, target_y / scale,
                                      duration_ms);
}

void AwContents::OnWebLayoutPageScaleFactorChanged(float page_scale_factor) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;
  Java_AwContents_onWebLayoutPageScaleFactorChanged(env, obj.obj(),
                                                         page_scale_factor);
}

void AwContents::OnWebLayoutContentsSizeChanged(
    const gfx::Size& contents_size) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
  if (obj.is_null())
    return;
  Java_AwContents_onWebLayoutContentsSizeChanged(
      env, obj.obj(), contents_size.width(), contents_size.height());
}

jlong AwContents::CapturePicture(JNIEnv* env,
                                 const JavaParamRef<jobject>& obj,
                                 int width,
                                 int height) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  return reinterpret_cast<intptr_t>(
      new AwPicture(browser_view_renderer_.CapturePicture(width, height)));
}

void AwContents::EnableOnNewPicture(JNIEnv* env,
                                    const JavaParamRef<jobject>& obj,
                                    jboolean enabled) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.EnableOnNewPicture(enabled);
}

namespace {
void InvokeVisualStateCallback(const JavaObjectWeakGlobalRef& java_ref,
                               jlong request_id,
                               ScopedJavaGlobalRef<jobject>* callback,
                               bool result) {
  JNIEnv* env = AttachCurrentThread();
  ScopedJavaLocalRef<jobject> obj = java_ref.get(env);
  if (obj.is_null())
     return;
  Java_AwContents_invokeVisualStateCallback(
      env, obj.obj(), callback->obj(), request_id);
}
}  // namespace

void AwContents::InsertVisualStateCallback(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj,
    jlong request_id,
    const JavaParamRef<jobject>& callback) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  ScopedJavaGlobalRef<jobject>* j_callback = new ScopedJavaGlobalRef<jobject>();
  j_callback->Reset(env, callback);
  web_contents_->GetMainFrame()->InsertVisualStateCallback(
      base::Bind(&InvokeVisualStateCallback, java_ref_, request_id,
                 base::Owned(j_callback)));
}

void AwContents::ClearView(JNIEnv* env, const JavaParamRef<jobject>& obj) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.ClearView();
}

void AwContents::SetExtraHeadersForUrl(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj,
    const JavaParamRef<jstring>& url,
    const JavaParamRef<jstring>& jextra_headers) {
  std::string extra_headers;
  if (jextra_headers)
    extra_headers = ConvertJavaStringToUTF8(env, jextra_headers);
  AwResourceContext* resource_context = static_cast<AwResourceContext*>(
      AwBrowserContext::FromWebContents(web_contents_.get())->
      GetResourceContext());
  resource_context->SetExtraHeaders(GURL(ConvertJavaStringToUTF8(env, url)),
                                    extra_headers);
}

void AwContents::SetJsOnlineProperty(JNIEnv* env,
                                     const JavaParamRef<jobject>& obj,
                                     jboolean network_up) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  render_view_host_ext_->SetJsOnlineProperty(network_up);
}

void AwContents::TrimMemory(JNIEnv* env,
                            const JavaParamRef<jobject>& obj,
                            jint level,
                            jboolean visible) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  browser_view_renderer_.TrimMemory(level, visible);
}

// TODO(sgurun) add support for posting a frame whose name is known (only
//               main frame is supported at this time, see crbug.com/389721)
void AwContents::PostMessageToFrame(JNIEnv* env,
                                    const JavaParamRef<jobject>& obj,
                                    const JavaParamRef<jstring>& frame_name,
                                    const JavaParamRef<jstring>& message,
                                    const JavaParamRef<jstring>& target_origin,
                                    const JavaParamRef<jintArray>& sent_ports) {
  // Use an empty source origin for android webview.
  base::string16 source_origin;
  base::string16 j_target_origin(ConvertJavaStringToUTF16(env, target_origin));
  base::string16 j_message(ConvertJavaStringToUTF16(env, message));
  std::vector<int> j_ports;

  if (sent_ports != nullptr) {
    base::android::JavaIntArrayToIntVector(env, sent_ports, &j_ports);
    BrowserThread::PostTask(
        BrowserThread::IO,
        FROM_HERE,
        base::Bind(&AwMessagePortServiceImpl::RemoveSentPorts,
                   base::Unretained(AwMessagePortServiceImpl::GetInstance()),
                   j_ports));
  }
  std::vector<content::TransferredMessagePort> ports(j_ports.size());
  for (size_t i = 0; i < j_ports.size(); ++i)
    ports[i].id = j_ports[i];
  content::MessagePortProvider::PostMessageToFrame(web_contents_.get(),
                                                   source_origin,
                                                   j_target_origin,
                                                   j_message,
                                                   ports);
}

scoped_refptr<AwMessagePortMessageFilter>
AwContents::GetMessagePortMessageFilter() {
  // Create a message port message filter if necessary
  if (message_port_message_filter_.get() == nullptr) {
    message_port_message_filter_ =
        new AwMessagePortMessageFilter(
            web_contents_->GetMainFrame()->GetRoutingID());
    web_contents_->GetRenderProcessHost()->AddFilter(
        message_port_message_filter_.get());
  }
  return message_port_message_filter_;
}

void AwContents::CreateMessageChannel(JNIEnv* env,
                                      const JavaParamRef<jobject>& obj,
                                      const JavaParamRef<jobjectArray>& ports) {
  AwMessagePortServiceImpl::GetInstance()->CreateMessageChannel(env, ports,
      GetMessagePortMessageFilter());
}

void AwContents::GrantFileSchemeAccesstoChildProcess(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj) {
  content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
      web_contents_->GetRenderProcessHost()->GetID(), url::kFileScheme);
}

void AwContents::ResumeLoadingCreatedPopupWebContents(
    JNIEnv* env,
    const JavaParamRef<jobject>& obj) {
  web_contents_->ResumeLoadingCreatedWebContents();
}

void SetShouldDownloadFavicons(JNIEnv* env,
                               const JavaParamRef<jclass>& jclazz) {
  g_should_download_favicons = true;
}

}  // namespace android_webview