content/browser/permissions/permission_service_impl.cc - chromium/src.git - Git at Google

 // Copyright 2014 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 "content/browser/permissions/permission_service_impl.h"

 #include <stddef.h>
 #include <utility>

 #include "base/bind.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/permission_manager.h"
 #include "content/public/browser/permission_type.h"

 using blink::mojom::PermissionName;
 using blink::mojom::PermissionStatus;

 namespace content {

 namespace {

 PermissionType PermissionNameToPermissionType(PermissionName name) {
   switch(name) {
     case PermissionName::GEOLOCATION:
       return PermissionType::GEOLOCATION;
     case PermissionName::NOTIFICATIONS:
       return PermissionType::NOTIFICATIONS;
     case PermissionName::PUSH_NOTIFICATIONS:
       return PermissionType::PUSH_MESSAGING;
     case PermissionName::MIDI:
       return PermissionType::MIDI;
     case PermissionName::MIDI_SYSEX:
       return PermissionType::MIDI_SYSEX;
     case PermissionName::PROTECTED_MEDIA_IDENTIFIER:
       return PermissionType::PROTECTED_MEDIA_IDENTIFIER;
     case PermissionName::DURABLE_STORAGE:
       return PermissionType::DURABLE_STORAGE;
     case PermissionName::AUDIO_CAPTURE:
       return PermissionType::AUDIO_CAPTURE;
     case PermissionName::VIDEO_CAPTURE:
       return PermissionType::VIDEO_CAPTURE;
     case PermissionName::BACKGROUND_SYNC:
       return PermissionType::BACKGROUND_SYNC;
   }

   NOTREACHED();
   return PermissionType::NUM;
 }

 // This function allows the usage of the the multiple request map
 // with single requests.
 void PermissionRequestResponseCallbackWrapper(
     const base::Callback<void(PermissionStatus)>& callback,
     mojo::Array<PermissionStatus> vector) {
   DCHECK_EQ(vector.size(), 1ul);
   callback.Run(vector[0]);
 }

 } // anonymous namespace

 PermissionServiceImpl::PendingRequest::PendingRequest(
     const RequestPermissionsCallback& callback,
     int request_count)
     : callback(callback),
       request_count(request_count) {
 }

 PermissionServiceImpl::PendingRequest::~PendingRequest() {
   if (callback.is_null())
     return;

   mojo::Array<PermissionStatus> result =
       mojo::Array<PermissionStatus>::New(request_count);
   for (int i = 0; i < request_count; ++i)
     result[i] = PermissionStatus::DENIED;
   callback.Run(std::move(result));
 }

 PermissionServiceImpl::PendingSubscription::PendingSubscription(
     PermissionType permission,
     const GURL& origin,
     const PermissionStatusCallback& callback)
     : id(-1),
       permission(permission),
       origin(origin),
       callback(callback) {
 }

 PermissionServiceImpl::PendingSubscription::~PendingSubscription() {
   if (!callback.is_null())
     callback.Run(PermissionStatus::ASK);
 }

 PermissionServiceImpl::PermissionServiceImpl(
     PermissionServiceContext* context,
     mojo::InterfaceRequest<blink::mojom::PermissionService> request)
     : context_(context),
       binding_(this, std::move(request)),
       weak_factory_(this) {
   binding_.set_connection_error_handler(
       base::Bind(&PermissionServiceImpl::OnConnectionError,
                  base::Unretained(this)));
 }

 PermissionServiceImpl::~PermissionServiceImpl() {
   DCHECK(pending_requests_.IsEmpty());
 }

 void PermissionServiceImpl::OnConnectionError() {
   CancelPendingOperations();
   context_->ServiceHadConnectionError(this);
   // After that call, |this| will be deleted.
 }

 void PermissionServiceImpl::RequestPermission(
     PermissionName permission,
     const mojo::String& origin,
     bool user_gesture,
     const PermissionStatusCallback& callback) {
   // This condition is valid if the call is coming from a ChildThread instead of
   // a RenderFrame. Some consumers of the service run in Workers and some in
   // Frames. In the context of a Worker, it is not possible to show a
   // permission prompt because there is no tab. In the context of a Frame, we
   // can. Even if the call comes from a context where it is not possible to show
   // any UI, we want to still return something relevant so the current
   // permission status is returned.
   BrowserContext* browser_context = context_->GetBrowserContext();
   DCHECK(browser_context);
   if (!context_->render_frame_host() ||
       !browser_context->GetPermissionManager()) {
     callback.Run(GetPermissionStatusFromName(permission, GURL(origin.get())));
     return;
   }

   int pending_request_id = pending_requests_.Add(new PendingRequest(
       base::Bind(&PermissionRequestResponseCallbackWrapper, callback), 1));
   int id = browser_context->GetPermissionManager()->RequestPermission(
       PermissionNameToPermissionType(permission),
       context_->render_frame_host(),
       GURL(origin.get()),
       base::Bind(&PermissionServiceImpl::OnRequestPermissionResponse,
                  weak_factory_.GetWeakPtr(),
                  pending_request_id));

   // Check if the request still exists. It might have been removed by the
   // callback if it was run synchronously.
   PendingRequest* pending_request = pending_requests_.Lookup(
       pending_request_id);
   if (!pending_request)
       return;
   pending_request->id = id;
 }

 void PermissionServiceImpl::OnRequestPermissionResponse(
     int pending_request_id,
     PermissionStatus status) {
   OnRequestPermissionsResponse(pending_request_id,
                                std::vector<PermissionStatus>(1, status));
 }

 void PermissionServiceImpl::RequestPermissions(
     mojo::Array<PermissionName> permissions,
     const mojo::String& origin,
     bool user_gesture,
     const RequestPermissionsCallback& callback) {
   if (permissions.is_null()) {
     callback.Run(mojo::Array<PermissionStatus>());
     return;
   }

   // This condition is valid if the call is coming from a ChildThread instead of
   // a RenderFrame. Some consumers of the service run in Workers and some in
   // Frames. In the context of a Worker, it is not possible to show a
   // permission prompt because there is no tab. In the context of a Frame, we
   // can. Even if the call comes from a context where it is not possible to show
   // any UI, we want to still return something relevant so the current
   // permission status is returned for each permission.
   BrowserContext* browser_context = context_->GetBrowserContext();
   DCHECK(browser_context);
   if (!context_->render_frame_host() ||
       !browser_context->GetPermissionManager()) {
     mojo::Array<PermissionStatus> result(permissions.size());
     for (size_t i = 0; i < permissions.size(); ++i) {
       result[i] =
           GetPermissionStatusFromName(permissions[i], GURL(origin.get()));
     }
     callback.Run(std::move(result));
     return;
   }

   std::vector<PermissionType> types(permissions.size());
   for (size_t i = 0; i < types.size(); ++i)
     types[i] = PermissionNameToPermissionType(permissions[i]);

   int pending_request_id = pending_requests_.Add(
       new PendingRequest(callback, permissions.size()));
   int id = browser_context->GetPermissionManager()->RequestPermissions(
       types,
       context_->render_frame_host(),
       GURL(origin.get()),
       base::Bind(&PermissionServiceImpl::OnRequestPermissionsResponse,
                  weak_factory_.GetWeakPtr(),
                  pending_request_id));

   // Check if the request still exists. It may have been removed by the
   // the response callback.
   PendingRequest* pending_request = pending_requests_.Lookup(
       pending_request_id);
   if (!pending_request)
       return;
   pending_request->id = id;
 }

 void PermissionServiceImpl::OnRequestPermissionsResponse(
     int pending_request_id,
     const std::vector<PermissionStatus>& result) {
   PendingRequest* request = pending_requests_.Lookup(pending_request_id);
   RequestPermissionsCallback callback(request->callback);
   request->callback.Reset();
   pending_requests_.Remove(pending_request_id);
   callback.Run(mojo::Array<PermissionStatus>::From(result));
 }

 void PermissionServiceImpl::CancelPendingOperations() {
   DCHECK(context_->GetBrowserContext());

   PermissionManager* permission_manager =
       context_->GetBrowserContext()->GetPermissionManager();
   if (!permission_manager)
     return;

   // Cancel pending requests.
   for (RequestsMap::Iterator<PendingRequest> it(&pending_requests_);
        !it.IsAtEnd(); it.Advance()) {
     permission_manager->CancelPermissionRequest(
         it.GetCurrentValue()->id);
   }
   pending_requests_.Clear();

   // Cancel pending subscriptions.
   for (SubscriptionsMap::Iterator<PendingSubscription>
           it(&pending_subscriptions_); !it.IsAtEnd(); it.Advance()) {
     it.GetCurrentValue()->callback.Run(GetPermissionStatusFromType(
         it.GetCurrentValue()->permission, it.GetCurrentValue()->origin));
     it.GetCurrentValue()->callback.Reset();
     permission_manager->UnsubscribePermissionStatusChange(
         it.GetCurrentValue()->id);
   }
   pending_subscriptions_.Clear();
 }

 void PermissionServiceImpl::HasPermission(
     PermissionName permission,
     const mojo::String& origin,
     const PermissionStatusCallback& callback) {
   callback.Run(GetPermissionStatusFromName(permission, GURL(origin.get())));
 }

 void PermissionServiceImpl::RevokePermission(
     PermissionName permission,
     const mojo::String& origin,
     const PermissionStatusCallback& callback) {
   GURL origin_url(origin.get());
   PermissionType permission_type = PermissionNameToPermissionType(permission);
   PermissionStatus status =
       GetPermissionStatusFromType(permission_type, origin_url);

   // Resetting the permission should only be possible if the permission is
   // already granted.
   if (status != PermissionStatus::GRANTED) {
     callback.Run(status);
     return;
   }

   ResetPermissionStatus(permission_type, origin_url);

   callback.Run(GetPermissionStatusFromType(permission_type, origin_url));
 }

 void PermissionServiceImpl::GetNextPermissionChange(
     PermissionName permission,
     const mojo::String& mojo_origin,
     PermissionStatus last_known_status,
     const PermissionStatusCallback& callback) {
   GURL origin(mojo_origin.get());
   PermissionStatus current_status =
       GetPermissionStatusFromName(permission, origin);
   if (current_status != last_known_status) {
     callback.Run(current_status);
     return;
   }

   BrowserContext* browser_context = context_->GetBrowserContext();
   DCHECK(browser_context);
   if (!browser_context->GetPermissionManager()) {
     callback.Run(current_status);
     return;
   }

   PermissionType permission_type = PermissionNameToPermissionType(permission);

   // We need to pass the id of PendingSubscription in pending_subscriptions_
   // to the callback but SubscribePermissionStatusChange() will also return an
   // id which is different.
   PendingSubscription* subscription =
       new PendingSubscription(permission_type, origin, callback);
   int pending_subscription_id = pending_subscriptions_.Add(subscription);

   GURL embedding_origin = context_->GetEmbeddingOrigin();
   subscription->id =
       browser_context->GetPermissionManager()->SubscribePermissionStatusChange(
           permission_type,
           origin,
           // If the embedding_origin is empty, we,ll use the |origin| instead.
           embedding_origin.is_empty() ? origin : embedding_origin,
           base::Bind(&PermissionServiceImpl::OnPermissionStatusChanged,
                      weak_factory_.GetWeakPtr(),
                      pending_subscription_id));
 }

 PermissionStatus PermissionServiceImpl::GetPermissionStatusFromName(
     PermissionName permission,
     const GURL& origin) {
   return GetPermissionStatusFromType(PermissionNameToPermissionType(permission),
                                      origin);
 }

 PermissionStatus PermissionServiceImpl::GetPermissionStatusFromType(
     PermissionType type,
     const GURL& origin) {
   BrowserContext* browser_context = context_->GetBrowserContext();
   DCHECK(browser_context);
   if (!browser_context->GetPermissionManager())
     return PermissionStatus::DENIED;

   // If the embedding_origin is empty we'll use |origin| instead.
   GURL embedding_origin = context_->GetEmbeddingOrigin();
   return browser_context->GetPermissionManager()->GetPermissionStatus(
       type, origin, embedding_origin.is_empty() ? origin : embedding_origin);
 }

 void PermissionServiceImpl::ResetPermissionStatus(PermissionType type,
                                                   const GURL& origin) {
   BrowserContext* browser_context = context_->GetBrowserContext();
   DCHECK(browser_context);
   if (!browser_context->GetPermissionManager())
     return;

   // If the embedding_origin is empty we'll use |origin| instead.
   GURL embedding_origin = context_->GetEmbeddingOrigin();
   browser_context->GetPermissionManager()->ResetPermission(
       type, origin, embedding_origin.is_empty() ? origin : embedding_origin);
 }

 void PermissionServiceImpl::OnPermissionStatusChanged(
     int pending_subscription_id,
     PermissionStatus status) {
   PendingSubscription* subscription =
       pending_subscriptions_.Lookup(pending_subscription_id);

   BrowserContext* browser_context = context_->GetBrowserContext();
   DCHECK(browser_context);
   if (browser_context->GetPermissionManager()) {
     browser_context->GetPermissionManager()->UnsubscribePermissionStatusChange(
         subscription->id);
   }

   PermissionStatusCallback callback = subscription->callback;

   subscription->callback.Reset();
   pending_subscriptions_.Remove(pending_subscription_id);

   callback.Run(status);
 }

 }  // namespace content
	// Copyright 2014 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 "content/browser/permissions/permission_service_impl.h"

	#include <stddef.h>
	#include <utility>

	#include "base/bind.h"
	#include "content/public/browser/browser_context.h"
	#include "content/public/browser/permission_manager.h"
	#include "content/public/browser/permission_type.h"

	using blink::mojom::PermissionName;
	using blink::mojom::PermissionStatus;

	namespace content {

	namespace {

	PermissionType PermissionNameToPermissionType(PermissionName name) {
	switch(name) {
	case PermissionName::GEOLOCATION:
	return PermissionType::GEOLOCATION;
	case PermissionName::NOTIFICATIONS:
	return PermissionType::NOTIFICATIONS;
	case PermissionName::PUSH_NOTIFICATIONS:
	return PermissionType::PUSH_MESSAGING;
	case PermissionName::MIDI:
	return PermissionType::MIDI;
	case PermissionName::MIDI_SYSEX:
	return PermissionType::MIDI_SYSEX;
	case PermissionName::PROTECTED_MEDIA_IDENTIFIER:
	return PermissionType::PROTECTED_MEDIA_IDENTIFIER;
	case PermissionName::DURABLE_STORAGE:
	return PermissionType::DURABLE_STORAGE;
	case PermissionName::AUDIO_CAPTURE:
	return PermissionType::AUDIO_CAPTURE;
	case PermissionName::VIDEO_CAPTURE:
	return PermissionType::VIDEO_CAPTURE;
	case PermissionName::BACKGROUND_SYNC:
	return PermissionType::BACKGROUND_SYNC;
	}

	NOTREACHED();
	return PermissionType::NUM;
	}

	// This function allows the usage of the the multiple request map
	// with single requests.
	void PermissionRequestResponseCallbackWrapper(
	const base::Callback<void(PermissionStatus)>& callback,
	mojo::Array<PermissionStatus> vector) {
	DCHECK_EQ(vector.size(), 1ul);
	callback.Run(vector[0]);
	}

	} // anonymous namespace

	PermissionServiceImpl::PendingRequest::PendingRequest(
	const RequestPermissionsCallback& callback,
	int request_count)
	: callback(callback),
	request_count(request_count) {
	}

	PermissionServiceImpl::PendingRequest::~PendingRequest() {
	if (callback.is_null())
	return;

	mojo::Array<PermissionStatus> result =
	mojo::Array<PermissionStatus>::New(request_count);
	for (int i = 0; i < request_count; ++i)
	result[i] = PermissionStatus::DENIED;
	callback.Run(std::move(result));
	}

	PermissionServiceImpl::PendingSubscription::PendingSubscription(
	PermissionType permission,
	const GURL& origin,
	const PermissionStatusCallback& callback)
	: id(-1),
	permission(permission),
	origin(origin),
	callback(callback) {
	}

	PermissionServiceImpl::PendingSubscription::~PendingSubscription() {
	if (!callback.is_null())
	callback.Run(PermissionStatus::ASK);
	}

	PermissionServiceImpl::PermissionServiceImpl(
	PermissionServiceContext* context,
	mojo::InterfaceRequest<blink::mojom::PermissionService> request)
	: context_(context),
	binding_(this, std::move(request)),
	weak_factory_(this) {
	binding_.set_connection_error_handler(
	base::Bind(&PermissionServiceImpl::OnConnectionError,
	base::Unretained(this)));
	}

	PermissionServiceImpl::~PermissionServiceImpl() {
	DCHECK(pending_requests_.IsEmpty());
	}

	void PermissionServiceImpl::OnConnectionError() {
	CancelPendingOperations();
	context_->ServiceHadConnectionError(this);
	// After that call, \|this\| will be deleted.
	}

	void PermissionServiceImpl::RequestPermission(
	PermissionName permission,
	const mojo::String& origin,
	bool user_gesture,
	const PermissionStatusCallback& callback) {
	// This condition is valid if the call is coming from a ChildThread instead of
	// a RenderFrame. Some consumers of the service run in Workers and some in
	// Frames. In the context of a Worker, it is not possible to show a
	// permission prompt because there is no tab. In the context of a Frame, we
	// can. Even if the call comes from a context where it is not possible to show
	// any UI, we want to still return something relevant so the current
	// permission status is returned.
	BrowserContext* browser_context = context_->GetBrowserContext();
	DCHECK(browser_context);
	if (!context_->render_frame_host() \|\|
	!browser_context->GetPermissionManager()) {
	callback.Run(GetPermissionStatusFromName(permission, GURL(origin.get())));
	return;
	}

	int pending_request_id = pending_requests_.Add(new PendingRequest(
	base::Bind(&PermissionRequestResponseCallbackWrapper, callback), 1));
	int id = browser_context->GetPermissionManager()->RequestPermission(
	PermissionNameToPermissionType(permission),
	context_->render_frame_host(),
	GURL(origin.get()),
	base::Bind(&PermissionServiceImpl::OnRequestPermissionResponse,
	weak_factory_.GetWeakPtr(),
	pending_request_id));

	// Check if the request still exists. It might have been removed by the
	// callback if it was run synchronously.
	PendingRequest* pending_request = pending_requests_.Lookup(
	pending_request_id);
	if (!pending_request)
	return;
	pending_request->id = id;
	}

	void PermissionServiceImpl::OnRequestPermissionResponse(
	int pending_request_id,
	PermissionStatus status) {
	OnRequestPermissionsResponse(pending_request_id,
	std::vector<PermissionStatus>(1, status));
	}

	void PermissionServiceImpl::RequestPermissions(
	mojo::Array<PermissionName> permissions,
	const mojo::String& origin,
	bool user_gesture,
	const RequestPermissionsCallback& callback) {
	if (permissions.is_null()) {
	callback.Run(mojo::Array<PermissionStatus>());
	return;
	}

	// This condition is valid if the call is coming from a ChildThread instead of
	// a RenderFrame. Some consumers of the service run in Workers and some in
	// Frames. In the context of a Worker, it is not possible to show a
	// permission prompt because there is no tab. In the context of a Frame, we
	// can. Even if the call comes from a context where it is not possible to show
	// any UI, we want to still return something relevant so the current
	// permission status is returned for each permission.
	BrowserContext* browser_context = context_->GetBrowserContext();
	DCHECK(browser_context);
	if (!context_->render_frame_host() \|\|
	!browser_context->GetPermissionManager()) {
	mojo::Array<PermissionStatus> result(permissions.size());
	for (size_t i = 0; i < permissions.size(); ++i) {
	result[i] =
	GetPermissionStatusFromName(permissions[i], GURL(origin.get()));
	}
	callback.Run(std::move(result));
	return;
	}

	std::vector<PermissionType> types(permissions.size());
	for (size_t i = 0; i < types.size(); ++i)
	types[i] = PermissionNameToPermissionType(permissions[i]);

	int pending_request_id = pending_requests_.Add(
	new PendingRequest(callback, permissions.size()));
	int id = browser_context->GetPermissionManager()->RequestPermissions(
	types,
	context_->render_frame_host(),
	GURL(origin.get()),
	base::Bind(&PermissionServiceImpl::OnRequestPermissionsResponse,
	weak_factory_.GetWeakPtr(),
	pending_request_id));

	// Check if the request still exists. It may have been removed by the
	// the response callback.
	PendingRequest* pending_request = pending_requests_.Lookup(
	pending_request_id);
	if (!pending_request)
	return;
	pending_request->id = id;
	}

	void PermissionServiceImpl::OnRequestPermissionsResponse(
	int pending_request_id,
	const std::vector<PermissionStatus>& result) {
	PendingRequest* request = pending_requests_.Lookup(pending_request_id);
	RequestPermissionsCallback callback(request->callback);
	request->callback.Reset();
	pending_requests_.Remove(pending_request_id);
	callback.Run(mojo::Array<PermissionStatus>::From(result));
	}

	void PermissionServiceImpl::CancelPendingOperations() {
	DCHECK(context_->GetBrowserContext());

	PermissionManager* permission_manager =
	context_->GetBrowserContext()->GetPermissionManager();
	if (!permission_manager)
	return;

	// Cancel pending requests.
	for (RequestsMap::Iterator<PendingRequest> it(&pending_requests_);
	!it.IsAtEnd(); it.Advance()) {
	permission_manager->CancelPermissionRequest(
	it.GetCurrentValue()->id);
	}
	pending_requests_.Clear();

	// Cancel pending subscriptions.
	for (SubscriptionsMap::Iterator<PendingSubscription>
	it(&pending_subscriptions_); !it.IsAtEnd(); it.Advance()) {
	it.GetCurrentValue()->callback.Run(GetPermissionStatusFromType(
	it.GetCurrentValue()->permission, it.GetCurrentValue()->origin));
	it.GetCurrentValue()->callback.Reset();
	permission_manager->UnsubscribePermissionStatusChange(
	it.GetCurrentValue()->id);
	}
	pending_subscriptions_.Clear();
	}

	void PermissionServiceImpl::HasPermission(
	PermissionName permission,
	const mojo::String& origin,
	const PermissionStatusCallback& callback) {
	callback.Run(GetPermissionStatusFromName(permission, GURL(origin.get())));
	}

	void PermissionServiceImpl::RevokePermission(
	PermissionName permission,
	const mojo::String& origin,
	const PermissionStatusCallback& callback) {
	GURL origin_url(origin.get());
	PermissionType permission_type = PermissionNameToPermissionType(permission);
	PermissionStatus status =
	GetPermissionStatusFromType(permission_type, origin_url);

	// Resetting the permission should only be possible if the permission is
	// already granted.
	if (status != PermissionStatus::GRANTED) {
	callback.Run(status);
	return;
	}

	ResetPermissionStatus(permission_type, origin_url);

	callback.Run(GetPermissionStatusFromType(permission_type, origin_url));
	}

	void PermissionServiceImpl::GetNextPermissionChange(
	PermissionName permission,
	const mojo::String& mojo_origin,
	PermissionStatus last_known_status,
	const PermissionStatusCallback& callback) {
	GURL origin(mojo_origin.get());
	PermissionStatus current_status =
	GetPermissionStatusFromName(permission, origin);
	if (current_status != last_known_status) {
	callback.Run(current_status);
	return;
	}

	BrowserContext* browser_context = context_->GetBrowserContext();
	DCHECK(browser_context);
	if (!browser_context->GetPermissionManager()) {
	callback.Run(current_status);
	return;
	}

	PermissionType permission_type = PermissionNameToPermissionType(permission);

	// We need to pass the id of PendingSubscription in pending_subscriptions_
	// to the callback but SubscribePermissionStatusChange() will also return an
	// id which is different.
	PendingSubscription* subscription =
	new PendingSubscription(permission_type, origin, callback);
	int pending_subscription_id = pending_subscriptions_.Add(subscription);

	GURL embedding_origin = context_->GetEmbeddingOrigin();
	subscription->id =
	browser_context->GetPermissionManager()->SubscribePermissionStatusChange(
	permission_type,
	origin,
	// If the embedding_origin is empty, we,ll use the \|origin\| instead.
	embedding_origin.is_empty() ? origin : embedding_origin,
	base::Bind(&PermissionServiceImpl::OnPermissionStatusChanged,
	weak_factory_.GetWeakPtr(),
	pending_subscription_id));
	}

	PermissionStatus PermissionServiceImpl::GetPermissionStatusFromName(
	PermissionName permission,
	const GURL& origin) {
	return GetPermissionStatusFromType(PermissionNameToPermissionType(permission),
	origin);
	}

	PermissionStatus PermissionServiceImpl::GetPermissionStatusFromType(
	PermissionType type,
	const GURL& origin) {
	BrowserContext* browser_context = context_->GetBrowserContext();
	DCHECK(browser_context);
	if (!browser_context->GetPermissionManager())
	return PermissionStatus::DENIED;

	// If the embedding_origin is empty we'll use \|origin\| instead.
	GURL embedding_origin = context_->GetEmbeddingOrigin();
	return browser_context->GetPermissionManager()->GetPermissionStatus(
	type, origin, embedding_origin.is_empty() ? origin : embedding_origin);
	}

	void PermissionServiceImpl::ResetPermissionStatus(PermissionType type,
	const GURL& origin) {
	BrowserContext* browser_context = context_->GetBrowserContext();
	DCHECK(browser_context);
	if (!browser_context->GetPermissionManager())
	return;

	// If the embedding_origin is empty we'll use \|origin\| instead.
	GURL embedding_origin = context_->GetEmbeddingOrigin();
	browser_context->GetPermissionManager()->ResetPermission(
	type, origin, embedding_origin.is_empty() ? origin : embedding_origin);
	}

	void PermissionServiceImpl::OnPermissionStatusChanged(
	int pending_subscription_id,
	PermissionStatus status) {
	PendingSubscription* subscription =
	pending_subscriptions_.Lookup(pending_subscription_id);

	BrowserContext* browser_context = context_->GetBrowserContext();
	DCHECK(browser_context);
	if (browser_context->GetPermissionManager()) {
	browser_context->GetPermissionManager()->UnsubscribePermissionStatusChange(
	subscription->id);
	}

	PermissionStatusCallback callback = subscription->callback;

	subscription->callback.Reset();
	pending_subscriptions_.Remove(pending_subscription_id);

	callback.Run(status);
	}

	} // namespace content