cc: Add support for sending BeginFrames for video.

cc/layers/video_frame_provider_client_impl.cc

 // Copyright 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 "cc/layers/video_frame_provider_client_impl.h"
 
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/layers/video_layer_impl.h"
 #include "media/base/video_frame.h"
 
 namespace cc {
 
 // static
 scoped_refptr<VideoFrameProviderClientImpl>
-VideoFrameProviderClientImpl::Create(VideoFrameProvider* provider) {
-  return make_scoped_refptr(new VideoFrameProviderClientImpl(provider));
+VideoFrameProviderClientImpl::Create(VideoFrameProvider* provider,
+                                     VideoFrameControllerClient* client) {
+  return make_scoped_refptr(new VideoFrameProviderClientImpl(provider, client));
 }
 
 VideoFrameProviderClientImpl::VideoFrameProviderClientImpl(
-    VideoFrameProvider* provider)
-    : provider_(provider), active_video_layer_(nullptr), stopped_(false) {
+    VideoFrameProvider* provider,
+    VideoFrameControllerClient* client)
+    : provider_(provider),
+      client_(client),
+      active_video_layer_(nullptr),
+      stopped_(false) {
   // This only happens during a commit on the compositor thread while the main
   // thread is blocked. That makes this a thread-safe call to set the video
   // frame provider client that does not require a lock. The same is true of
   // the call to Stop().
   provider_->SetVideoFrameProviderClient(this);
 
   // This matrix is the default transformation for stream textures, and flips
   // on the Y axis.
   stream_texture_matrix_ = gfx::Transform(
       1.0, 0.0, 0.0, 0.0,
@@ skipping 19 matching lines @@
   active_video_layer_ = video_layer;
 }
 
 void VideoFrameProviderClientImpl::Stop() {
   DCHECK(thread_checker_.CalledOnValidThread());
   // It's called when the main thread is blocked, so lock isn't needed.
   if (provider_) {
     provider_->SetVideoFrameProviderClient(nullptr);
     provider_ = nullptr;
   }
+  client_->RemoveVideoFrameController(this);
   active_video_layer_ = nullptr;
   stopped_ = true;
 }
 
 bool VideoFrameProviderClientImpl::Stopped() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return stopped_;
 }
 
 scoped_refptr<media::VideoFrame>
@@ skipping 46 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   stream_texture_matrix_ = gfx::Transform(
       matrix[0], matrix[4], matrix[8], matrix[12],
       matrix[1], matrix[5], matrix[9], matrix[13],
       matrix[2], matrix[6], matrix[10], matrix[14],
       matrix[3], matrix[7], matrix[11], matrix[15]);
   if (active_video_layer_)
     active_video_layer_->SetNeedsRedraw();
 }
 
+void VideoFrameProviderClientImpl::OnBeginFrame(const BeginFrameArgs& args) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
 }  // namespace cc