Integrate VDA with WebRTC.

content/renderer/media/renderer_gpu_video_decoder_factories.cc

Index: content/renderer/media/renderer_gpu_video_decoder_factories.cc
diff --git a/content/renderer/media/renderer_gpu_video_decoder_factories.cc b/content/renderer/media/renderer_gpu_video_decoder_factories.cc
index 8aff3874cb56a345fb5ed3a0ff5587a730409a44..8a03f82f10d8d0cdda498a52494cba28a53633e7 100644
--- a/content/renderer/media/renderer_gpu_video_decoder_factories.cc
+++ b/content/renderer/media/renderer_gpu_video_decoder_factories.cc
@@ -29,6 +29,7 @@ RendererGpuVideoDecoderFactories::RendererGpuVideoDecoderFactories(
       render_thread_async_waiter_(false, false) {
   if (message_loop_->BelongsToCurrentThread()) {
     AsyncGetContext(context);
+    compositor_loop_async_waiter_.Reset();
     return;
   }
   // Threaded compositor requires us to wait for the context to be acquired.
@@ -63,7 +64,11 @@ media::VideoDecodeAccelerator*
 RendererGpuVideoDecoderFactories::CreateVideoDecodeAccelerator(
     media::VideoCodecProfile profile,
     media::VideoDecodeAccelerator::Client* client) {
-  DCHECK(!message_loop_->BelongsToCurrentThread());
+  if (message_loop_->BelongsToCurrentThread()) {
+    AsyncCreateVideoDecodeAccelerator(profile, client);
+    compositor_loop_async_waiter_.Reset();
+    return vda_.release();

[Ami GONE FROM CHROMIUM, 2013/05/29 21:11:46]

For consistency with the other similar codepaths below,  
DCHECK(!message_loop_->BelongsToCurrentThread());
at l.72 below?

[wuchengli, 2013/06/10 12:33:42]

I removed DCHECK(!message_loop_->BelongsToCurrentThread()); in other functions.
It is redundant after if (message_loop_->BelongsToCurrentThread()).

+  }
   // The VDA is returned in the vda_ member variable by the
   // AsyncCreateVideoDecodeAccelerator() function.
   message_loop_->PostTask(FROM_HERE, base::Bind(
@@ -101,6 +106,12 @@ bool RendererGpuVideoDecoderFactories::CreateTextures(
     int32 count, const gfx::Size& size,
     std::vector<uint32>* texture_ids,
     uint32 texture_target) {
+  if (message_loop_->BelongsToCurrentThread()) {
+    AsyncCreateTextures(count, size, texture_target);
+    texture_ids->swap(created_textures_);
+    compositor_loop_async_waiter_.Reset();
+    return true;
+  }
   DCHECK(!message_loop_->BelongsToCurrentThread());
   message_loop_->PostTask(FROM_HERE, base::Bind(
       &RendererGpuVideoDecoderFactories::AsyncCreateTextures, this,
@@ -148,6 +159,10 @@ void RendererGpuVideoDecoderFactories::AsyncCreateTextures(
 }
 
 void RendererGpuVideoDecoderFactories::DeleteTexture(uint32 texture_id) {
+  if (message_loop_->BelongsToCurrentThread()) {
+    AsyncDeleteTexture(texture_id);
+    return;
+  }
   DCHECK(!message_loop_->BelongsToCurrentThread());
   message_loop_->PostTask(FROM_HERE, base::Bind(
       &RendererGpuVideoDecoderFactories::AsyncDeleteTexture, this, texture_id));