Merge AssociateStreamWithProducer message into CreateStream message for both audio output and input.

content/renderer/media/renderer_audio_output_device.cc

-// Copyright (c) 2012 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 "content/renderer/media/renderer_audio_output_device.h"
-
-#include "base/bind.h"
-#include "base/message_loop_proxy.h"
-#include "content/renderer/media/audio_message_filter.h"
-
-namespace content {
-
-RendererAudioOutputDevice::RendererAudioOutputDevice(
-    AudioMessageFilter* message_filter,
-    const scoped_refptr<base::MessageLoopProxy>& io_loop)
-    : AudioOutputDevice(message_filter, io_loop),
-      source_render_view_id_(MSG_ROUTING_NONE),
-      is_after_stream_created_(false) {
-}
-
-RendererAudioOutputDevice::~RendererAudioOutputDevice() {}
-
-void RendererAudioOutputDevice::Start() {
-  AudioOutputDevice::Start();
-  message_loop()->PostTask(
-      FROM_HERE,
-      base::Bind(&RendererAudioOutputDevice::OnStart, this));
-}
-
-void RendererAudioOutputDevice::Stop() {
-  AudioOutputDevice::Stop();
-  message_loop()->PostTask(
-      FROM_HERE,
-      base::Bind(&RendererAudioOutputDevice::OnStop, this));
-}
-
-void RendererAudioOutputDevice::SetSourceRenderView(int render_view_id) {
-  message_loop()->PostTask(
-      FROM_HERE,
-      base::Bind(&RendererAudioOutputDevice::OnSourceChange, this,
-                 render_view_id));
-}
-
-void RendererAudioOutputDevice::OnStart() {
-  DCHECK(message_loop()->BelongsToCurrentThread());
-  is_after_stream_created_ = true;
-  OnSourceChange(source_render_view_id_);
-}
-
-void RendererAudioOutputDevice::OnStop() {
-  DCHECK(message_loop()->BelongsToCurrentThread());
-  is_after_stream_created_ = false;
-}
-
-void RendererAudioOutputDevice::OnSourceChange(int render_view_id) {
-  DCHECK(message_loop()->BelongsToCurrentThread());
-  source_render_view_id_ = render_view_id;
-  if (is_after_stream_created_ && source_render_view_id_ != MSG_ROUTING_NONE) {
-    AudioMessageFilter* const filter =
-        static_cast<AudioMessageFilter*>(audio_output_ipc());
-    if (filter)
-      filter->AssociateStreamWithProducer(stream_id(), source_render_view_id_);
-  }
-}
-
-}  // namespace content