[WIP] Proxy RtcVideoDecoder calls to a media::VideoDecoder.

content/renderer/media/webrtc/peer_connection_dependency_factory.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_WEBRTC_PEER_CONNECTION_DEPENDENCY_FACTORY_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_PEER_CONNECTION_DEPENDENCY_FACTORY_H_
 
 #include <string>
 
 #include "base/files/file.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread.h"
 #include "content/common/content_export.h"
 #include "content/renderer/media/webrtc/stun_field_trial.h"
 #include "content/renderer/p2p/socket_dispatcher.h"
 #include "ipc/ipc_platform_file.h"
 #include "third_party/webrtc/api/peerconnectioninterface.h"
 #include "third_party/webrtc/p2p/stunprober/stunprober.h"
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace media {
 class GpuVideoAcceleratorFactories;
+class VideoDecoder;
 }
 
 namespace rtc {
 class NetworkManager;
 class PacketSocketFactory;
 class Thread;
 }
 
 namespace blink {
 class WebFrame;
@@ skipping 87 matching lines @@
 
   // Functions related to Stun probing trial to determine how fast we could send
   // Stun request without being dropped by NAT.
   void TryScheduleStunProbeTrial();
   void StartStunProbeTrialOnWorkerThread(const std::string& params);
 
   // Creates |pc_factory_|, which in turn is used for
   // creating PeerConnection objects.
   void CreatePeerConnectionFactory();
 
+  using CreateVideoDecoderCB =
+      base::Callback<std::unique_ptr<media::VideoDecoder>()>;
+
   void InitializeSignalingThread(
       media::GpuVideoAcceleratorFactories* gpu_factories,
+      const CreateVideoDecoderCB& create_video_decoder_cb,
+      const scoped_refptr<base::SingleThreadTaskRunner>& decoder_task_runner,
       base::WaitableEvent* event);
 
   void InitializeWorkerThread(rtc::Thread** thread,
                               base::WaitableEvent* event);
 
   void CreateIpcNetworkManagerOnWorkerThread(base::WaitableEvent* event);
   void DeleteIpcNetworkManager();
   void CleanupPeerConnectionFactory();
 
   // We own network_manager_, must be deleted on the worker thread.
   // The network manager uses |p2p_socket_dispatcher_|.
   IpcNetworkManager* network_manager_;
   std::unique_ptr<IpcPacketSocketFactory> socket_factory_;
 
   scoped_refptr<webrtc::PeerConnectionFactoryInterface> pc_factory_;
 
   scoped_refptr<P2PSocketDispatcher> p2p_socket_dispatcher_;
   scoped_refptr<WebRtcAudioDeviceImpl> audio_device_;
 
   std::unique_ptr<StunProberTrial> stun_trial_;
 
   // PeerConnection threads. signaling_thread_ is created from the
   // "current" chrome thread.
   rtc::Thread* signaling_thread_;
   rtc::Thread* worker_thread_;
   base::Thread chrome_signaling_thread_;
   base::Thread chrome_worker_thread_;
 
+  const scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+
   DISALLOW_COPY_AND_ASSIGN(PeerConnectionDependencyFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_PEER_CONNECTION_DEPENDENCY_FACTORY_H_