android_webview/native/aw_quota_manager_bridge_impl.cc - codesearch/chromium/src - Git at Google

 // Copyright (c) 2013 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_quota_manager_bridge_impl.h"

 #include <set>

 #include "android_webview/browser/aw_browser_context.h"
 #include "android_webview/browser/aw_content_browser_client.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/synchronization/waitable_event.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/common/content_client.h"
 #include "jni/AwQuotaManagerBridge_jni.h"
 #include "storage/browser/quota/quota_manager.h"
 #include "storage/common/quota/quota_types.h"
 #include "url/gurl.h"

 using base::android::AttachCurrentThread;
 using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 using content::BrowserThread;
 using content::StoragePartition;
 using storage::QuotaClient;
 using storage::QuotaManager;

 namespace android_webview {

 namespace {

 // This object lives on UI and IO threads. Care need to be taken to make sure
 // there are no concurrent accesses to instance variables. Also this object
 // is refcounted in the various callbacks, and is destroyed when all callbacks
 // are destroyed at the end of DoneOnUIThread.
 class GetOriginsTask : public base::RefCountedThreadSafe<GetOriginsTask> {
  public:
   GetOriginsTask(
       const AwQuotaManagerBridgeImpl::GetOriginsCallback& callback,
       QuotaManager* quota_manager);

   void Run();

  private:
   friend class base::RefCountedThreadSafe<GetOriginsTask>;
   ~GetOriginsTask();

   void OnOriginsObtained(const std::set<GURL>& origins,
                          storage::StorageType type);

   void OnUsageAndQuotaObtained(const GURL& origin,
                                storage::QuotaStatusCode status_code,
                                int64_t usage,
                                int64_t quota);

   void CheckDone();
   void DoneOnUIThread();

   AwQuotaManagerBridgeImpl::GetOriginsCallback ui_callback_;
   scoped_refptr<QuotaManager> quota_manager_;

   std::vector<std::string> origin_;
   std::vector<int64_t> usage_;
   std::vector<int64_t> quota_;

   size_t num_callbacks_to_wait_;
   size_t num_callbacks_received_;

   DISALLOW_COPY_AND_ASSIGN(GetOriginsTask);
 };

 GetOriginsTask::GetOriginsTask(
     const AwQuotaManagerBridgeImpl::GetOriginsCallback& callback,
     QuotaManager* quota_manager)
     : ui_callback_(callback),
       quota_manager_(quota_manager) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 }

 GetOriginsTask::~GetOriginsTask() {}

 void GetOriginsTask::Run() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&QuotaManager::GetOriginsModifiedSince,
                  quota_manager_,
                  storage::kStorageTypeTemporary,
                  base::Time() /* Since beginning of time. */,
                  base::Bind(&GetOriginsTask::OnOriginsObtained, this)));
 }

 void GetOriginsTask::OnOriginsObtained(const std::set<GURL>& origins,
                                        storage::StorageType type) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   num_callbacks_to_wait_ = origins.size();
   num_callbacks_received_ = 0u;

   for (std::set<GURL>::const_iterator origin = origins.begin();
        origin != origins.end();
        ++origin) {
     quota_manager_->GetUsageAndQuota(
         *origin,
         type,
         base::Bind(&GetOriginsTask::OnUsageAndQuotaObtained, this, *origin));
   }

   CheckDone();
 }

 void GetOriginsTask::OnUsageAndQuotaObtained(
     const GURL& origin,
     storage::QuotaStatusCode status_code,
     int64_t usage,
     int64_t quota) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (status_code == storage::kQuotaStatusOk) {
     origin_.push_back(origin.spec());
     usage_.push_back(usage);
     quota_.push_back(quota);
   }

   ++num_callbacks_received_;
   CheckDone();
 }

 void GetOriginsTask::CheckDone() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (num_callbacks_received_ == num_callbacks_to_wait_) {
     BrowserThread::PostTask(
         BrowserThread::UI,
         FROM_HERE,
         base::Bind(&GetOriginsTask::DoneOnUIThread, this));
   } else if (num_callbacks_received_ > num_callbacks_to_wait_) {
     NOTREACHED();
   }
 }

 // This method is to avoid copying the 3 vector arguments into a bound callback.
 void GetOriginsTask::DoneOnUIThread() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   ui_callback_.Run(origin_, usage_, quota_);
 }

 void RunOnUIThread(const base::Closure& task) {
   if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
     task.Run();
   } else {
     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, task);
   }
 }

 }  // namespace


 // static
 jlong GetDefaultNativeAwQuotaManagerBridge(JNIEnv* env,
                                            const JavaParamRef<jclass>& clazz) {
   AwBrowserContext* browser_context =
       AwContentBrowserClient::GetAwBrowserContext();

   AwQuotaManagerBridgeImpl* bridge = static_cast<AwQuotaManagerBridgeImpl*>(
       browser_context->GetQuotaManagerBridge());
   DCHECK(bridge);
   return reinterpret_cast<intptr_t>(bridge);
 }

 // static
 scoped_refptr<AwQuotaManagerBridge> AwQuotaManagerBridgeImpl::Create(
     AwBrowserContext* browser_context) {
   return new AwQuotaManagerBridgeImpl(browser_context);
 }

 AwQuotaManagerBridgeImpl::AwQuotaManagerBridgeImpl(
     AwBrowserContext* browser_context)
     : browser_context_(browser_context),
       weak_factory_(this) {
 }

 AwQuotaManagerBridgeImpl::~AwQuotaManagerBridgeImpl() {}

 void AwQuotaManagerBridgeImpl::Init(JNIEnv* env,
                                     const JavaParamRef<jobject>& object) {
   java_ref_ = JavaObjectWeakGlobalRef(env, object);
 }

 StoragePartition* AwQuotaManagerBridgeImpl::GetStoragePartition() const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);

   // AndroidWebview does not use per-site storage partitions.
   StoragePartition* storage_partition =
       content::BrowserContext::GetDefaultStoragePartition(browser_context_);
   DCHECK(storage_partition);
   return storage_partition;
 }

 QuotaManager* AwQuotaManagerBridgeImpl::GetQuotaManager() const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);

   QuotaManager* quota_manager = GetStoragePartition()->GetQuotaManager();
   DCHECK(quota_manager);
   return quota_manager;
 }

 void AwQuotaManagerBridgeImpl::DeleteAllData(
     JNIEnv* env,
     const JavaParamRef<jobject>& object) {
   RunOnUIThread(base::Bind(&AwQuotaManagerBridgeImpl::DeleteAllDataOnUiThread,
                            this));
 }

 void AwQuotaManagerBridgeImpl::DeleteAllDataOnUiThread() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   GetStoragePartition()->ClearData(
       // Clear all web storage data except cookies.
       StoragePartition::REMOVE_DATA_MASK_APPCACHE |
           StoragePartition::REMOVE_DATA_MASK_FILE_SYSTEMS |
           StoragePartition::REMOVE_DATA_MASK_INDEXEDDB |
           StoragePartition::REMOVE_DATA_MASK_LOCAL_STORAGE |
           StoragePartition::REMOVE_DATA_MASK_WEBSQL,
       StoragePartition::QUOTA_MANAGED_STORAGE_MASK_TEMPORARY,
       GURL(), StoragePartition::OriginMatcherFunction(),
       base::Time(), base::Time::Max(), base::Bind(&base::DoNothing));
 }

 void AwQuotaManagerBridgeImpl::DeleteOrigin(
     JNIEnv* env,
     const JavaParamRef<jobject>& object,
     const JavaParamRef<jstring>& origin) {
   base::string16 origin_string(
       base::android::ConvertJavaStringToUTF16(env, origin));
   RunOnUIThread(base::Bind(&AwQuotaManagerBridgeImpl::DeleteOriginOnUiThread,
                            this,
                            origin_string));
 }

 void AwQuotaManagerBridgeImpl::DeleteOriginOnUiThread(
     const base::string16& origin) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   StoragePartition* storage_partition = GetStoragePartition();
   storage_partition->ClearDataForOrigin(
       // All (temporary) QuotaClient types.
       StoragePartition::REMOVE_DATA_MASK_APPCACHE |
           StoragePartition::REMOVE_DATA_MASK_FILE_SYSTEMS |
           StoragePartition::REMOVE_DATA_MASK_INDEXEDDB |
           StoragePartition::REMOVE_DATA_MASK_WEBSQL,
       StoragePartition::QUOTA_MANAGED_STORAGE_MASK_TEMPORARY,
       GURL(origin),
       storage_partition->GetURLRequestContext(),
       base::Bind(&base::DoNothing));
 }

 void AwQuotaManagerBridgeImpl::GetOrigins(JNIEnv* env,
                                           const JavaParamRef<jobject>& object,
                                           jint callback_id) {
   RunOnUIThread(base::Bind(&AwQuotaManagerBridgeImpl::GetOriginsOnUiThread,
                            this,
                            callback_id));
 }

 void AwQuotaManagerBridgeImpl::GetOriginsOnUiThread(jint callback_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);

   const GetOriginsCallback ui_callback = base::Bind(
       &AwQuotaManagerBridgeImpl::GetOriginsCallbackImpl,
       weak_factory_.GetWeakPtr(),
       callback_id);

   (new GetOriginsTask(ui_callback, GetQuotaManager()))->Run();
 }

 void AwQuotaManagerBridgeImpl::GetOriginsCallbackImpl(
     int jcallback_id,
     const std::vector<std::string>& origin,
     const std::vector<int64_t>& usage,
     const std::vector<int64_t>& quota) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (obj.is_null())
     return;

   Java_AwQuotaManagerBridge_onGetOriginsCallback(
       env, obj, jcallback_id, base::android::ToJavaArrayOfStrings(env, origin),
       base::android::ToJavaLongArray(env, usage),
       base::android::ToJavaLongArray(env, quota));
 }

 namespace {

 void OnUsageAndQuotaObtained(
     const AwQuotaManagerBridgeImpl::QuotaUsageCallback& ui_callback,
     storage::QuotaStatusCode status_code,
     int64_t usage,
     int64_t quota) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (status_code != storage::kQuotaStatusOk) {
     usage = 0;
     quota = 0;
   }
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(ui_callback, usage, quota));
 }

 } // namespace

 void AwQuotaManagerBridgeImpl::GetUsageAndQuotaForOrigin(
     JNIEnv* env,
     const JavaParamRef<jobject>& object,
     const JavaParamRef<jstring>& origin,
     jint callback_id,
     bool is_quota) {
   base::string16 origin_string(
       base::android::ConvertJavaStringToUTF16(env, origin));
   RunOnUIThread(base::Bind(
       &AwQuotaManagerBridgeImpl::GetUsageAndQuotaForOriginOnUiThread,
       this,
       origin_string,
       callback_id,
       is_quota));
 }

 void AwQuotaManagerBridgeImpl::GetUsageAndQuotaForOriginOnUiThread(
     const base::string16& origin,
     jint callback_id,
     bool is_quota) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   const QuotaUsageCallback ui_callback = base::Bind(
       &AwQuotaManagerBridgeImpl::QuotaUsageCallbackImpl,
       weak_factory_.GetWeakPtr(),
       callback_id,
       is_quota);

   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&QuotaManager::GetUsageAndQuota,
                  GetQuotaManager(),
                  GURL(origin),
                  storage::kStorageTypeTemporary,
                  base::Bind(&OnUsageAndQuotaObtained, ui_callback)));
 }

 void AwQuotaManagerBridgeImpl::QuotaUsageCallbackImpl(int jcallback_id,
                                                       bool is_quota,
                                                       int64_t usage,
                                                       int64_t quota) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (obj.is_null())
     return;

   Java_AwQuotaManagerBridge_onGetUsageAndQuotaForOriginCallback(
       env, obj, jcallback_id, is_quota, usage, quota);
 }

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

 }  // namespace android_webview
	// Copyright (c) 2013 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_quota_manager_bridge_impl.h"

	#include <set>

	#include "android_webview/browser/aw_browser_context.h"
	#include "android_webview/browser/aw_content_browser_client.h"
	#include "base/android/jni_array.h"
	#include "base/android/jni_string.h"
	#include "base/synchronization/waitable_event.h"
	#include "content/public/browser/browser_thread.h"
	#include "content/public/browser/storage_partition.h"
	#include "content/public/common/content_client.h"
	#include "jni/AwQuotaManagerBridge_jni.h"
	#include "storage/browser/quota/quota_manager.h"
	#include "storage/common/quota/quota_types.h"
	#include "url/gurl.h"

	using base::android::AttachCurrentThread;
	using base::android::JavaParamRef;
	using base::android::ScopedJavaLocalRef;
	using content::BrowserThread;
	using content::StoragePartition;
	using storage::QuotaClient;
	using storage::QuotaManager;

	namespace android_webview {

	namespace {

	// This object lives on UI and IO threads. Care need to be taken to make sure
	// there are no concurrent accesses to instance variables. Also this object
	// is refcounted in the various callbacks, and is destroyed when all callbacks
	// are destroyed at the end of DoneOnUIThread.
	class GetOriginsTask : public base::RefCountedThreadSafe<GetOriginsTask> {
	public:
	GetOriginsTask(
	const AwQuotaManagerBridgeImpl::GetOriginsCallback& callback,
	QuotaManager* quota_manager);

	void Run();

	private:
	friend class base::RefCountedThreadSafe<GetOriginsTask>;
	~GetOriginsTask();

	void OnOriginsObtained(const std::set<GURL>& origins,
	storage::StorageType type);

	void OnUsageAndQuotaObtained(const GURL& origin,
	storage::QuotaStatusCode status_code,
	int64_t usage,
	int64_t quota);

	void CheckDone();
	void DoneOnUIThread();

	AwQuotaManagerBridgeImpl::GetOriginsCallback ui_callback_;
	scoped_refptr<QuotaManager> quota_manager_;

	std::vector<std::string> origin_;
	std::vector<int64_t> usage_;
	std::vector<int64_t> quota_;

	size_t num_callbacks_to_wait_;
	size_t num_callbacks_received_;

	DISALLOW_COPY_AND_ASSIGN(GetOriginsTask);
	};

	GetOriginsTask::GetOriginsTask(
	const AwQuotaManagerBridgeImpl::GetOriginsCallback& callback,
	QuotaManager* quota_manager)
	: ui_callback_(callback),
	quota_manager_(quota_manager) {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	}

	GetOriginsTask::~GetOriginsTask() {}

	void GetOriginsTask::Run() {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	BrowserThread::PostTask(
	BrowserThread::IO,
	FROM_HERE,
	base::Bind(&QuotaManager::GetOriginsModifiedSince,
	quota_manager_,
	storage::kStorageTypeTemporary,
	base::Time() /* Since beginning of time. */,
	base::Bind(&GetOriginsTask::OnOriginsObtained, this)));
	}

	void GetOriginsTask::OnOriginsObtained(const std::set<GURL>& origins,
	storage::StorageType type) {
	DCHECK_CURRENTLY_ON(BrowserThread::IO);
	num_callbacks_to_wait_ = origins.size();
	num_callbacks_received_ = 0u;

	for (std::set<GURL>::const_iterator origin = origins.begin();
	origin != origins.end();
	++origin) {
	quota_manager_->GetUsageAndQuota(
	*origin,
	type,
	base::Bind(&GetOriginsTask::OnUsageAndQuotaObtained, this, *origin));
	}

	CheckDone();
	}

	void GetOriginsTask::OnUsageAndQuotaObtained(
	const GURL& origin,
	storage::QuotaStatusCode status_code,
	int64_t usage,
	int64_t quota) {
	DCHECK_CURRENTLY_ON(BrowserThread::IO);
	if (status_code == storage::kQuotaStatusOk) {
	origin_.push_back(origin.spec());
	usage_.push_back(usage);
	quota_.push_back(quota);
	}

	++num_callbacks_received_;
	CheckDone();
	}

	void GetOriginsTask::CheckDone() {
	DCHECK_CURRENTLY_ON(BrowserThread::IO);
	if (num_callbacks_received_ == num_callbacks_to_wait_) {
	BrowserThread::PostTask(
	BrowserThread::UI,
	FROM_HERE,
	base::Bind(&GetOriginsTask::DoneOnUIThread, this));
	} else if (num_callbacks_received_ > num_callbacks_to_wait_) {
	NOTREACHED();
	}
	}

	// This method is to avoid copying the 3 vector arguments into a bound callback.
	void GetOriginsTask::DoneOnUIThread() {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	ui_callback_.Run(origin_, usage_, quota_);
	}

	void RunOnUIThread(const base::Closure& task) {
	if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
	task.Run();
	} else {
	BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, task);
	}
	}

	} // namespace


	// static
	jlong GetDefaultNativeAwQuotaManagerBridge(JNIEnv* env,
	const JavaParamRef<jclass>& clazz) {
	AwBrowserContext* browser_context =
	AwContentBrowserClient::GetAwBrowserContext();

	AwQuotaManagerBridgeImpl* bridge = static_cast<AwQuotaManagerBridgeImpl*>(
	browser_context->GetQuotaManagerBridge());
	DCHECK(bridge);
	return reinterpret_cast<intptr_t>(bridge);
	}

	// static
	scoped_refptr<AwQuotaManagerBridge> AwQuotaManagerBridgeImpl::Create(
	AwBrowserContext* browser_context) {
	return new AwQuotaManagerBridgeImpl(browser_context);
	}

	AwQuotaManagerBridgeImpl::AwQuotaManagerBridgeImpl(
	AwBrowserContext* browser_context)
	: browser_context_(browser_context),
	weak_factory_(this) {
	}

	AwQuotaManagerBridgeImpl::~AwQuotaManagerBridgeImpl() {}

	void AwQuotaManagerBridgeImpl::Init(JNIEnv* env,
	const JavaParamRef<jobject>& object) {
	java_ref_ = JavaObjectWeakGlobalRef(env, object);
	}

	StoragePartition* AwQuotaManagerBridgeImpl::GetStoragePartition() const {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);

	// AndroidWebview does not use per-site storage partitions.
	StoragePartition* storage_partition =
	content::BrowserContext::GetDefaultStoragePartition(browser_context_);
	DCHECK(storage_partition);
	return storage_partition;
	}

	QuotaManager* AwQuotaManagerBridgeImpl::GetQuotaManager() const {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);

	QuotaManager* quota_manager = GetStoragePartition()->GetQuotaManager();
	DCHECK(quota_manager);
	return quota_manager;
	}

	void AwQuotaManagerBridgeImpl::DeleteAllData(
	JNIEnv* env,
	const JavaParamRef<jobject>& object) {
	RunOnUIThread(base::Bind(&AwQuotaManagerBridgeImpl::DeleteAllDataOnUiThread,
	this));
	}

	void AwQuotaManagerBridgeImpl::DeleteAllDataOnUiThread() {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	GetStoragePartition()->ClearData(
	// Clear all web storage data except cookies.
	StoragePartition::REMOVE_DATA_MASK_APPCACHE \|
	StoragePartition::REMOVE_DATA_MASK_FILE_SYSTEMS \|
	StoragePartition::REMOVE_DATA_MASK_INDEXEDDB \|
	StoragePartition::REMOVE_DATA_MASK_LOCAL_STORAGE \|
	StoragePartition::REMOVE_DATA_MASK_WEBSQL,
	StoragePartition::QUOTA_MANAGED_STORAGE_MASK_TEMPORARY,
	GURL(), StoragePartition::OriginMatcherFunction(),
	base::Time(), base::Time::Max(), base::Bind(&base::DoNothing));
	}

	void AwQuotaManagerBridgeImpl::DeleteOrigin(
	JNIEnv* env,
	const JavaParamRef<jobject>& object,
	const JavaParamRef<jstring>& origin) {
	base::string16 origin_string(
	base::android::ConvertJavaStringToUTF16(env, origin));
	RunOnUIThread(base::Bind(&AwQuotaManagerBridgeImpl::DeleteOriginOnUiThread,
	this,
	origin_string));
	}

	void AwQuotaManagerBridgeImpl::DeleteOriginOnUiThread(
	const base::string16& origin) {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	StoragePartition* storage_partition = GetStoragePartition();
	storage_partition->ClearDataForOrigin(
	// All (temporary) QuotaClient types.
	StoragePartition::REMOVE_DATA_MASK_APPCACHE \|
	StoragePartition::REMOVE_DATA_MASK_FILE_SYSTEMS \|
	StoragePartition::REMOVE_DATA_MASK_INDEXEDDB \|
	StoragePartition::REMOVE_DATA_MASK_WEBSQL,
	StoragePartition::QUOTA_MANAGED_STORAGE_MASK_TEMPORARY,
	GURL(origin),
	storage_partition->GetURLRequestContext(),
	base::Bind(&base::DoNothing));
	}

	void AwQuotaManagerBridgeImpl::GetOrigins(JNIEnv* env,
	const JavaParamRef<jobject>& object,
	jint callback_id) {
	RunOnUIThread(base::Bind(&AwQuotaManagerBridgeImpl::GetOriginsOnUiThread,
	this,
	callback_id));
	}

	void AwQuotaManagerBridgeImpl::GetOriginsOnUiThread(jint callback_id) {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);

	const GetOriginsCallback ui_callback = base::Bind(
	&AwQuotaManagerBridgeImpl::GetOriginsCallbackImpl,
	weak_factory_.GetWeakPtr(),
	callback_id);

	(new GetOriginsTask(ui_callback, GetQuotaManager()))->Run();
	}

	void AwQuotaManagerBridgeImpl::GetOriginsCallbackImpl(
	int jcallback_id,
	const std::vector<std::string>& origin,
	const std::vector<int64_t>& usage,
	const std::vector<int64_t>& quota) {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	JNIEnv* env = AttachCurrentThread();
	ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
	if (obj.is_null())
	return;

	Java_AwQuotaManagerBridge_onGetOriginsCallback(
	env, obj, jcallback_id, base::android::ToJavaArrayOfStrings(env, origin),
	base::android::ToJavaLongArray(env, usage),
	base::android::ToJavaLongArray(env, quota));
	}

	namespace {

	void OnUsageAndQuotaObtained(
	const AwQuotaManagerBridgeImpl::QuotaUsageCallback& ui_callback,
	storage::QuotaStatusCode status_code,
	int64_t usage,
	int64_t quota) {
	DCHECK_CURRENTLY_ON(BrowserThread::IO);
	if (status_code != storage::kQuotaStatusOk) {
	usage = 0;
	quota = 0;
	}
	BrowserThread::PostTask(
	BrowserThread::UI,
	FROM_HERE,
	base::Bind(ui_callback, usage, quota));
	}

	} // namespace

	void AwQuotaManagerBridgeImpl::GetUsageAndQuotaForOrigin(
	JNIEnv* env,
	const JavaParamRef<jobject>& object,
	const JavaParamRef<jstring>& origin,
	jint callback_id,
	bool is_quota) {
	base::string16 origin_string(
	base::android::ConvertJavaStringToUTF16(env, origin));
	RunOnUIThread(base::Bind(
	&AwQuotaManagerBridgeImpl::GetUsageAndQuotaForOriginOnUiThread,
	this,
	origin_string,
	callback_id,
	is_quota));
	}

	void AwQuotaManagerBridgeImpl::GetUsageAndQuotaForOriginOnUiThread(
	const base::string16& origin,
	jint callback_id,
	bool is_quota) {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	const QuotaUsageCallback ui_callback = base::Bind(
	&AwQuotaManagerBridgeImpl::QuotaUsageCallbackImpl,
	weak_factory_.GetWeakPtr(),
	callback_id,
	is_quota);

	BrowserThread::PostTask(
	BrowserThread::IO,
	FROM_HERE,
	base::Bind(&QuotaManager::GetUsageAndQuota,
	GetQuotaManager(),
	GURL(origin),
	storage::kStorageTypeTemporary,
	base::Bind(&OnUsageAndQuotaObtained, ui_callback)));
	}

	void AwQuotaManagerBridgeImpl::QuotaUsageCallbackImpl(int jcallback_id,
	bool is_quota,
	int64_t usage,
	int64_t quota) {
	DCHECK_CURRENTLY_ON(BrowserThread::UI);
	JNIEnv* env = AttachCurrentThread();
	ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
	if (obj.is_null())
	return;

	Java_AwQuotaManagerBridge_onGetUsageAndQuotaForOriginCallback(
	env, obj, jcallback_id, is_quota, usage, quota);
	}

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

	} // namespace android_webview