Add MediaGpuChannelManager::LookupChannel().

media/mojo/services/mojo_video_decoder_service.cc

 // Copyright 2016 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 "media/mojo/services/mojo_video_decoder_service.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 13 matching lines @@
 MojoVideoDecoderService::MojoVideoDecoderService(
     MojoMediaClient* mojo_media_client)
     : mojo_media_client_(mojo_media_client), weak_factory_(this) {
   weak_this_ = weak_factory_.GetWeakPtr();
 }
 
 MojoVideoDecoderService::~MojoVideoDecoderService() {}
 
 void MojoVideoDecoderService::Construct(
     mojom::VideoDecoderClientAssociatedPtrInfo client,
-    mojo::ScopedDataPipeConsumerHandle decoder_buffer_pipe) {
+    mojo::ScopedDataPipeConsumerHandle decoder_buffer_pipe,
+    mojom::CommandBufferIdPtr command_buffer_id) {
   DVLOG(1) << __func__;
 
+  if (command_buffer_id) {
+    DVLOG(1) << command_buffer_id->channel_token << " : "
+             << command_buffer_id->route_id;

[dcheng, 2017/01/10 06:03:42]

Is it possible to upstream the implementation of this function into this CL?

[sandersd (OOO until July 31), 2017/01/10 23:54:14]

Done. (It's now plumbed to the factory which does not yet have an
implementation.)

+  } else {
+    DVLOG(1) << "No command_buffer_id";
+  }
+
+  // TODO(sandersd): Enter an error state.
   if (decoder_)
     return;
 
   // TODO(sandersd): Provide callback for requesting a GpuCommandBufferStub.
   decoder_ = mojo_media_client_->CreateVideoDecoder(
       base::ThreadTaskRunnerHandle::Get());
 
   client_.Bind(std::move(client));
 
   mojo_decoder_buffer_reader_.reset(
@@ skipping 81 matching lines @@
 }
 
 void MojoVideoDecoderService::OnDecoderOutput(
     const scoped_refptr<VideoFrame>& frame) {
   DVLOG(2) << __func__;
   DCHECK(client_);
   client_->OnVideoFrameDecoded(mojom::VideoFrame::From(frame));
 }
 
 }  // namespace media