Make VEA client of command buffer; move sync. IPC to VDA/VEA::Initialize()

media/filters/gpu_video_decoder.cc

Index: media/filters/gpu_video_decoder.cc
diff --git a/media/filters/gpu_video_decoder.cc b/media/filters/gpu_video_decoder.cc
index 1ce5ba0fbaba5e5929fd1642f13fb438f0681e31..d796a96a2df7184dba7461591dbcf66ad20ec778 100644
--- a/media/filters/gpu_video_decoder.cc
+++ b/media/filters/gpu_video_decoder.cc
@@ -180,7 +180,7 @@ void GpuVideoDecoder::Initialize(const VideoDecoderConfig& config,
     return;
   }
 
-  vda_ = factories_->CreateVideoDecodeAccelerator(config.profile()).Pass();
+  vda_ = factories_->CreateVideoDecodeAccelerator().Pass();
   if (!vda_ || !vda_->Initialize(config.profile(), this)) {
     status_cb.Run(DECODER_ERROR_NOT_SUPPORTED);
     return;
@@ -345,10 +345,6 @@ bool GpuVideoDecoder::CanReadWithoutStalling() const {
       available_pictures_ > 0 || !ready_video_frames_.empty();
 }
 
-void GpuVideoDecoder::NotifyInitializeDone() {
-  NOTREACHED() << "GpuVideoDecodeAcceleratorHost::Initialize is synchronous!";
-}
-
 void GpuVideoDecoder::ProvidePictureBuffers(uint32 count,
                                             const gfx::Size& size,
                                             uint32 texture_target) {