Extract media code from RenderFrameImpl

content/renderer/media/render_media_helper.cc

+// Copyright 2017 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/renderer/media/render_media_helper.h"
+
+#include "base/command_line.h"
+#include "base/memory/ptr_util.h"
+#include "base/metrics/field_trial_params.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "build/buildflag.h"
+#include "content/public/common/content_client.h"
+#include "content/public/renderer/content_renderer_client.h"
+#include "content/renderer/media/audio_device_factory.h"
+#include "content/renderer/media/media_permission_dispatcher.h"
+#include "content/renderer/media/media_stream_renderer_factory_impl.h"
+#include "content/renderer/media/render_media_log.h"
+#include "content/renderer/media/renderer_webmediaplayer_delegate.h"
+#include "content/renderer/media/web_media_element_source_utils.h"
+#include "content/renderer/media/webmediaplayer_ms.h"
+#include "content/renderer/render_frame_impl.h"
+#include "content/renderer/render_thread_impl.h"
+#include "content/renderer/render_view_impl.h"
+#include "media/base/decoder_factory.h"
+#include "media/base/media_switches.h"
+#include "media/base/renderer_factory_selector.h"
+#include "media/base/surface_manager.h"
+#include "media/blink/webencryptedmediaclient_impl.h"
+#include "media/blink/webmediaplayer_impl.h"
+#include "media/blink/webmediaplayer_util.h"
+#include "media/filters/context_3d.h"
+#include "media/renderers/default_renderer_factory.h"
+#include "mojo/public/cpp/bindings/associated_interface_ptr.h"
+#include "services/service_manager/public/cpp/interface_provider.h"
+#include "services/ui/public/cpp/gpu/context_provider_command_buffer.h"
+#include "third_party/WebKit/public/platform/modules/permissions/permission.mojom.h"
+#include "third_party/WebKit/public/web/WebKit.h"
+#include "third_party/WebKit/public/web/WebLocalFrame.h"
+
+#if defined(OS_ANDROID)
+#include "content/renderer/media/android/media_player_renderer_client_factory.h"
+#include "content/renderer/media/android/renderer_media_player_manager.h"
+#include "content/renderer/media/android/renderer_surface_view_manager.h"
+#include "content/renderer/media/android/stream_texture_wrapper_impl.h"
+#include "media/base/android/media_codec_util.h"
+#include "media/base/media.h"
+#endif
+
+#if BUILDFLAG(ENABLE_MOJO_MEDIA)
+#include "content/renderer/media/media_interface_provider.h"
+#endif
+
+#if BUILDFLAG(ENABLE_MOJO_CDM)
+#include "media/mojo/clients/mojo_cdm_factory.h"  // nogncheck
+#endif
+
+#if BUILDFLAG(ENABLE_MOJO_RENDERER)
+#include "media/mojo/clients/mojo_renderer_factory.h"  // nogncheck
+#endif
+
+#if BUILDFLAG(ENABLE_MOJO_AUDIO_DECODER) || BUILDFLAG(ENABLE_MOJO_VIDEO_DECODER)
+#include "media/mojo/clients/mojo_decoder_factory.h"  // nogncheck
+#endif
+
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+#include "media/remoting/courier_renderer_factory.h"    // nogncheck
+#include "media/remoting/remoting_cdm_controller.h"     // nogncheck
+#include "media/remoting/remoting_cdm_factory.h"        // nogncheck
+#include "media/remoting/renderer_controller.h"         // nogncheck
+#include "media/remoting/shared_session.h"              // nogncheck
+#include "media/remoting/sink_availability_observer.h"  // nogncheck
+#endif
+
+#if BUILDFLAG(ENABLE_PEPPER_CDMS)
+#include "content/renderer/media/cdm/pepper_cdm_wrapper_impl.h"
+#include "content/renderer/media/cdm/render_cdm_factory.h"
+#endif
+
+namespace content {
+
+RenderMediaHelper::RenderMediaHelper(
+    RenderFrameImpl* render_frame,
+    const RequestRoutingTokenCallback request_routing_token_cb)
+    : render_frame_(render_frame),
+      request_routing_token_cb_(request_routing_token_cb),
+      remote_interfaces_(render_frame->GetRemoteInterfaces()),
+#if defined(OS_ANDROID)
+      media_player_manager_(nullptr),
+#endif
+      media_surface_manager_(nullptr),
+      media_player_delegate_(nullptr) {
+
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+  // Create the SinkAvailabilityObserver to monitor the remoting sink
+  // availablity.
+  media::mojom::RemotingSourcePtr remoting_source;
+  auto remoting_source_request = mojo::MakeRequest(&remoting_source);
+  media::mojom::RemoterPtr remoter;
+  GetRemoterFactory()->Create(std::move(remoting_source),
+                              mojo::MakeRequest(&remoter));
+  remoting_sink_observer_ =
+      base::MakeUnique<media::remoting::SinkAvailabilityObserver>(
+          std::move(remoting_source_request), std::move(remoter));
+#endif  // BUILDFLAG(ENABLE_MEDIA_REMOTING)
+}
+
+RenderMediaHelper::~RenderMediaHelper() {}
+
+media::Context3D GetSharedMainThreadContext3D(
+    scoped_refptr<ui::ContextProviderCommandBuffer> provider) {
+  if (!provider)
+    return media::Context3D();
+  return media::Context3D(provider->ContextGL(), provider->GrContext());
+}
+
+#if defined(OS_ANDROID)
+// Returns true if the MediaPlayerRenderer should be used for playback, false
+// if the default renderer should be used instead.
+//
+// Note that HLS and MP4 detection are pre-redirect and path-based. It is
+// possible to load such a URL and find different content.
+bool UseMediaPlayerRenderer(const GURL& url) {
+  // Always use the default renderer for playing blob URLs.
+  if (url.SchemeIsBlob())
+    return false;
+
+  // The default renderer does not support HLS.
+  if (media::MediaCodecUtil::IsHLSURL(url))
+    return true;
+
+  // Don't use the default renderer if the container likely contains a codec we
+  // can't decode in software and platform decoders are not available.
+  if (!media::HasPlatformDecoderSupport()) {
+    // Assume that "mp4" means H264. Without platform decoder support we cannot
+    // play it with the default renderer so use MediaPlayerRenderer.
+    // http://crbug.com/642988.
+    if (base::ToLowerASCII(url.spec()).find("mp4") != std::string::npos)
+      return true;
+  }
+
+  // Indicates if the Android MediaPlayer should be used instead of WMPI.
+  if (GetContentClient()->renderer()->ShouldUseMediaPlayerForURL(url))
+    return true;
+
+  // Otherwise, use the default renderer.
+  return false;
+}
+#endif  // defined(OS_ANDROID)
+
+blink::WebMediaPlayer* RenderMediaHelper::CreateMediaPlayer(
+    const blink::WebMediaPlayerSource& source,
+    blink::WebMediaPlayerClient* client,
+    blink::WebMediaPlayerEncryptedMediaClient* encrypted_client,
+    blink::WebContentDecryptionModule* initial_cdm,
+    const blink::WebString& sink_id) {
+  blink::WebLocalFrame* web_frame = render_frame_->GetWebFrame();
+  blink::WebSecurityOrigin security_origin =
+      render_frame_->GetWebFrame()->GetSecurityOrigin();
+  blink::WebMediaStream web_stream =
+      GetWebMediaStreamFromWebMediaPlayerSource(source);
+  if (!web_stream.IsNull())
+    return CreateWebMediaPlayerForMediaStream(client, sink_id, security_origin,
+                                              web_frame);
+
+  // If |source| was not a MediaStream, it must be a URL.
+  // TODO(guidou): Fix this when support for other srcObject types is added.
+  DCHECK(source.IsURL());
+  blink::WebURL url = source.GetAsURL();
+
+  RenderThreadImpl* render_thread = RenderThreadImpl::current();
+  // Render thread may not exist in tests, returning nullptr if it does not.
+  if (!render_thread)
+    return nullptr;
+
+  scoped_refptr<media::SwitchableAudioRendererSink> audio_renderer_sink =
+      AudioDeviceFactory::NewSwitchableAudioRendererSink(
+          AudioDeviceFactory::kSourceMediaElement,
+          render_frame_->GetRoutingID(), 0, sink_id.Utf8(), security_origin);
+  // We need to keep a reference to the context provider (see crbug.com/610527)
+  // but media/ can't depend on cc/, so for now, just keep a reference in the
+  // callback.
+  // TODO(piman): replace media::Context3D to scoped_refptr<ContextProvider> in
+  // media/ once ContextProvider is in gpu/.
+  media::WebMediaPlayerParams::Context3DCB context_3d_cb = base::Bind(
+      &GetSharedMainThreadContext3D,
+      RenderThreadImpl::current()->SharedMainThreadContextProvider());
+
+  const WebPreferences webkit_preferences =
+      render_frame_->GetWebkitPreferences();
+  bool embedded_media_experience_enabled = false;
+  bool use_media_player_renderer = false;
+#if defined(OS_ANDROID)
+  use_media_player_renderer = UseMediaPlayerRenderer(url);
+  if (!use_media_player_renderer && !media_surface_manager_)
+    media_surface_manager_ = new RendererSurfaceViewManager(render_frame_);
+  embedded_media_experience_enabled =
+      webkit_preferences.embedded_media_experience_enabled;
+#endif  // defined(OS_ANDROID)
+
+  base::TimeDelta max_keyframe_distance_to_disable_background_video =
+      base::TimeDelta::FromMilliseconds(base::GetFieldTrialParamByFeatureAsInt(
+          media::kBackgroundVideoTrackOptimization, "max_keyframe_distance_ms",
+          base::TimeDelta::FromSeconds(10).InMilliseconds()));
+  base::TimeDelta max_keyframe_distance_to_disable_background_video_mse =
+      base::TimeDelta::FromMilliseconds(base::GetFieldTrialParamByFeatureAsInt(
+          media::kBackgroundVideoTrackOptimization,
+          "max_keyframe_distance_media_source_ms",
+          base::TimeDelta::FromSeconds(10).InMilliseconds()));
+
+  // This must be created for every new WebMediaPlayer, each instance generates
+  // a new player id which is used to collate logs on the browser side.
+  std::unique_ptr<media::MediaLog> media_log(
+      new RenderMediaLog(url::Origin(security_origin).GetURL()));
+
+  base::WeakPtr<media::MediaObserver> media_observer;
+
+  auto factory_selector =
+      CreateRendererFactorySelector(media_log.get(), use_media_player_renderer,
+                                    GetDecoderFactory(), &media_observer);
+
+  if (!url_index_.get() || url_index_->frame() != web_frame)
+    url_index_.reset(new media::UrlIndex(web_frame));
+
+  std::unique_ptr<media::WebMediaPlayerParams> params(
+      new media::WebMediaPlayerParams(
+          std::move(media_log),
+          base::Bind(&ContentRendererClient::DeferMediaLoad,
+                     base::Unretained(GetContentClient()->renderer()),
+                     static_cast<RenderFrame*>(render_frame_),
+                     GetWebMediaPlayerDelegate()->has_played_media()),
+          audio_renderer_sink, render_thread->GetMediaThreadTaskRunner(),
+          render_thread->GetWorkerTaskRunner(),
+          render_thread->compositor_task_runner(), context_3d_cb,
+          base::Bind(&v8::Isolate::AdjustAmountOfExternalAllocatedMemory,
+                     base::Unretained(blink::MainThreadIsolate())),
+          initial_cdm, media_surface_manager_, request_routing_token_cb_,
+          media_observer, max_keyframe_distance_to_disable_background_video,
+          max_keyframe_distance_to_disable_background_video_mse,
+          webkit_preferences.enable_instant_source_buffer_gc,
+          GetContentClient()->renderer()->AllowMediaSuspend(),
+          embedded_media_experience_enabled));
+
+  media::WebMediaPlayerImpl* media_player = new media::WebMediaPlayerImpl(
+      web_frame, client, encrypted_client, GetWebMediaPlayerDelegate(),
+      std::move(factory_selector), url_index_, std::move(params));
+
+#if defined(OS_ANDROID)  // WMPI_CAST
+  media_player->SetMediaPlayerManager(GetMediaPlayerManager());
+  media_player->SetDeviceScaleFactor(
+      render_frame_->render_view()->GetDeviceScaleFactor());
+#endif  // defined(OS_ANDROID)
+
+  return media_player;
+}
+
+blink::WebEncryptedMediaClient* RenderMediaHelper::EncryptedMediaClient() {
+  if (!web_encrypted_media_client_) {
+    web_encrypted_media_client_.reset(new media::WebEncryptedMediaClientImpl(
+        // base::Unretained(this) is safe because WebEncryptedMediaClientImpl
+        // is destructed before |this|, and does not give away ownership of the
+        // callback.
+        base::Bind(&RenderMediaHelper::AreSecureCodecsSupported,
+                   base::Unretained(this)),
+        GetCdmFactory(), GetMediaPermission(),
+        new RenderMediaLog(
+            url::Origin(render_frame_->GetWebFrame()->GetSecurityOrigin())
+                .GetURL())));
+  }
+  return web_encrypted_media_client_.get();
+}
+
+void RenderMediaHelper::CheckIfAudioSinkExistsAndIsAuthorized(
+    const blink::WebString& sink_id,
+    const blink::WebSecurityOrigin& security_origin,
+    blink::WebSetSinkIdCallbacks* web_callbacks) {
+  media::OutputDeviceStatusCB callback =
+      media::ConvertToOutputDeviceStatusCB(web_callbacks);
+  callback.Run(
+      AudioDeviceFactory::GetOutputDeviceInfo(render_frame_->GetRoutingID(), 0,
+                                              sink_id.Utf8(), security_origin)
+          .device_status());
+}
+
+void ConnectToPermissionService(
+    service_manager::InterfaceProvider* remote_interfaces,
+    mojo::InterfaceRequest<blink::mojom::PermissionService> request) {
+  remote_interfaces->GetInterface(std::move(request));
+}
+
+media::MediaPermission* RenderMediaHelper::GetMediaPermission() {
+  if (!media_permission_dispatcher_) {
+    media_permission_dispatcher_.reset(new MediaPermissionDispatcher(base::Bind(
+        ConnectToPermissionService, base::Unretained(remote_interfaces_))));
+  }
+  return media_permission_dispatcher_.get();
+}
+
+std::unique_ptr<media::RendererFactorySelector>
+RenderMediaHelper::CreateRendererFactorySelector(
+    media::MediaLog* media_log,
+    bool use_media_player,
+    media::DecoderFactory* decoder_factory,
+    base::WeakPtr<media::MediaObserver>* out_media_observer) {
+  RenderThreadImpl* render_thread = RenderThreadImpl::current();
+  // Render thread may not exist in tests, returning nullptr if it does not.
+  if (!render_thread)
+    return nullptr;
+
+  auto factory_selector = base::MakeUnique<media::RendererFactorySelector>();
+
+#if defined(OS_ANDROID)
+  // The only MojoRendererService that is registered at the RenderFrameHost
+  // level uses the MediaPlayerRenderer as its underlying media::Renderer.
+  auto mojo_media_player_renderer_factory =
+      base::MakeUnique<media::MojoRendererFactory>(
+          media::MojoRendererFactory::GetGpuFactoriesCB(),
+          remote_interfaces_->get());
+
+  // Always give |factory_selector| a MediaPlayerRendererClient factory. WMPI
+  // might fallback to it if the final redirected URL is an HLS url.
+  factory_selector->AddFactory(
+      media::RendererFactorySelector::FactoryType::MEDIA_PLAYER,
+      base::MakeUnique<MediaPlayerRendererClientFactory>(
+          render_thread->compositor_task_runner(),
+          std::move(mojo_media_player_renderer_factory),
+          base::Bind(&StreamTextureWrapperImpl::Create,
+                     render_thread->EnableStreamTextureCopy(),
+                     render_thread->GetStreamTexureFactory(),
+                     base::ThreadTaskRunnerHandle::Get())));
+
+  factory_selector->SetUseMediaPlayer(use_media_player);
+#endif  // defined(OS_ANDROID)
+
+  bool use_mojo_renderer_factory = false;
+#if BUILDFLAG(ENABLE_MOJO_RENDERER)
+#if BUILDFLAG(ENABLE_RUNTIME_MEDIA_RENDERER_SELECTION)
+  use_mojo_renderer_factory =
+      !base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableMojoRenderer);
+#else
+  use_mojo_renderer_factory = true;
+#endif  // BUILDFLAG(ENABLE_RUNTIME_MEDIA_RENDERER_SELECTION)
+  if (use_mojo_renderer_factory) {
+    factory_selector->AddFactory(
+        media::RendererFactorySelector::FactoryType::MOJO,
+        base::MakeUnique<media::MojoRendererFactory>(
+            base::Bind(&RenderThreadImpl::GetGpuFactories,
+                       base::Unretained(render_thread)),
+            GetMediaInterfaceProvider()));
+
+    factory_selector->SetBaseFactoryType(
+        media::RendererFactorySelector::FactoryType::MOJO);
+  }
+#endif  // BUILDFLAG(ENABLE_MOJO_RENDERER)
+
+  if (!use_mojo_renderer_factory) {
+    factory_selector->AddFactory(
+        media::RendererFactorySelector::FactoryType::DEFAULT,
+        base::MakeUnique<media::DefaultRendererFactory>(
+            media_log, decoder_factory,
+            base::Bind(&RenderThreadImpl::GetGpuFactories,
+                       base::Unretained(render_thread))));
+
+    factory_selector->SetBaseFactoryType(
+        media::RendererFactorySelector::FactoryType::DEFAULT);
+  }
+
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+  media::mojom::RemotingSourcePtr remoting_source;
+  auto remoting_source_request = mojo::MakeRequest(&remoting_source);
+  media::mojom::RemoterPtr remoter;
+  GetRemoterFactory()->Create(std::move(remoting_source),
+                              mojo::MakeRequest(&remoter));
+  using RemotingController = media::remoting::RendererController;
+  std::unique_ptr<RemotingController> remoting_controller(
+      new RemotingController(new media::remoting::SharedSession(
+          std::move(remoting_source_request), std::move(remoter))));
+  base::WeakPtr<media::MediaObserver> media_observer =
+      remoting_controller->GetWeakPtr();
+
+  auto courier_factory =
+      base::MakeUnique<media::remoting::CourierRendererFactory>(
+          std::move(remoting_controller));
+
+  // base::Unretained is safe here because |factory_selector| owns
+  // |courier_factory|.
+  factory_selector->SetQueryIsRemotingActiveCB(
+      base::Bind(&media::remoting::CourierRendererFactory::IsRemotingActive,
+                 base::Unretained(courier_factory.get())));
+
+  factory_selector->AddFactory(
+      media::RendererFactorySelector::FactoryType::COURIER,
+      std::move(courier_factory));
+#endif
+
+  return factory_selector;
+}
+
+blink::WebMediaPlayer* RenderMediaHelper::CreateWebMediaPlayerForMediaStream(
+    blink::WebMediaPlayerClient* client,
+    const blink::WebString& sink_id,
+    const blink::WebSecurityOrigin& security_origin,
+    blink::WebLocalFrame* frame) {
+#if BUILDFLAG(ENABLE_WEBRTC)
+  RenderThreadImpl* const render_thread = RenderThreadImpl::current();
+
+  scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner =
+      render_thread->compositor_task_runner();
+  if (!compositor_task_runner.get())
+    compositor_task_runner = base::ThreadTaskRunnerHandle::Get();
+
+  return new WebMediaPlayerMS(
+      frame, client, GetWebMediaPlayerDelegate(),
+      base::MakeUnique<RenderMediaLog>(url::Origin(security_origin).GetURL()),
+      CreateMediaStreamRendererFactory(), render_thread->GetIOTaskRunner(),
+      compositor_task_runner, render_thread->GetMediaThreadTaskRunner(),
+      render_thread->GetWorkerTaskRunner(), render_thread->GetGpuFactories(),
+      sink_id, security_origin);
+#else
+  return NULL;
+#endif  // BUILDFLAG(ENABLE_WEBRTC)
+}
+
+media::RendererWebMediaPlayerDelegate*
+RenderMediaHelper::GetWebMediaPlayerDelegate() {
+  if (!media_player_delegate_) {
+    media_player_delegate_ =
+        new media::RendererWebMediaPlayerDelegate(render_frame_);
+  }
+  return media_player_delegate_;
+}
+
+std::unique_ptr<MediaStreamRendererFactory>
+RenderMediaHelper::CreateMediaStreamRendererFactory() {
+  std::unique_ptr<MediaStreamRendererFactory> factory =
+      GetContentClient()->renderer()->CreateMediaStreamRendererFactory();
+  if (factory.get())
+    return factory;
+#if BUILDFLAG(ENABLE_WEBRTC)
+  return std::unique_ptr<MediaStreamRendererFactory>(
+      new MediaStreamRendererFactoryImpl());
+#else
+  return std::unique_ptr<MediaStreamRendererFactory>(
+      static_cast<MediaStreamRendererFactory*>(NULL));
+#endif
+}
+
+media::DecoderFactory* RenderMediaHelper::GetDecoderFactory() {
+#if BUILDFLAG(ENABLE_MOJO_AUDIO_DECODER) || BUILDFLAG(ENABLE_MOJO_VIDEO_DECODER)
+  if (!decoder_factory_) {
+    decoder_factory_.reset(
+        new media::MojoDecoderFactory(GetMediaInterfaceProvider()));
+  }
+#endif
+  return decoder_factory_.get();
+}
+
+#if defined(OS_ANDROID)
+RendererMediaPlayerManager* RenderMediaHelper::GetMediaPlayerManager() {
+  if (!media_player_manager_)
+    media_player_manager_ = new RendererMediaPlayerManager(render_frame_);
+  return media_player_manager_;
+}
+#endif  // defined(OS_ANDROID)
+
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+media::mojom::RemoterFactory* RenderMediaHelper::GetRemoterFactory() {
+  if (!remoter_factory_)
+    remote_interfaces_->GetInterface(&remoter_factory_);
+  return remoter_factory_.get();
+}
+#endif
+
+bool RenderMediaHelper::AreSecureCodecsSupported() {
+#if defined(OS_ANDROID)
+  // Hardware-secure codecs are only supported if secure surfaces are enabled.
+  return render_frame_->GetRendererPreferences()
+      .use_video_overlay_for_embedded_encrypted_video;
+#else
+  return false;
+#endif  // defined(OS_ANDROID)
+}
+
+media::CdmFactory* RenderMediaHelper::GetCdmFactory() {
+  blink::WebLocalFrame* web_frame = render_frame_->GetWebFrame();
+  DCHECK(web_frame);
+
+  if (cdm_factory_)
+    return cdm_factory_.get();
+
+#if BUILDFLAG(ENABLE_PEPPER_CDMS)
+  static_assert(BUILDFLAG(ENABLE_MOJO_CDM),
+                "Mojo CDM should always be enabled when PPAPI CDM is enabled");
+  if (base::FeatureList::IsEnabled(media::kMojoCdm)) {
+    cdm_factory_.reset(new media::MojoCdmFactory(GetMediaInterfaceProvider()));
+  } else {
+    cdm_factory_.reset(new RenderCdmFactory(
+        base::Bind(&PepperCdmWrapperImpl::Create, web_frame)));
+  }
+#elif BUILDFLAG(ENABLE_MOJO_CDM)
+  cdm_factory_.reset(new media::MojoCdmFactory(GetMediaInterfaceProvider()));
+#endif  // BUILDFLAG(ENABLE_PEPPER_CDMS)
+
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+  cdm_factory_.reset(new media::remoting::RemotingCdmFactory(
+      std::move(cdm_factory_), GetRemoterFactory(),
+      std::move(remoting_sink_observer_)));
+#endif  // BUILDFLAG(ENABLE_MEDIA_REMOTING)
+
+  return cdm_factory_.get();
+}
+
+#if BUILDFLAG(ENABLE_MOJO_MEDIA)
+service_manager::mojom::InterfaceProvider*
+RenderMediaHelper::GetMediaInterfaceProvider() {
+  if (!media_interface_provider_) {
+    media_interface_provider_.reset(
+        new MediaInterfaceProvider(remote_interfaces_));
+  }
+
+  return media_interface_provider_.get();
+}
+#endif  // BUILDFLAG(ENABLE_MOJO_MEDIA)
+
+}  // namespace content