Switch stream creation and closing in Chrome audio rendering from IPC to Mojo

content/renderer/render_thread_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 68 matching lines @@
 class RendererScheduler;
 class WebThreadBase;
 }
 
 namespace v8 {
 class Extension;
 }
 
 namespace content {
 
+class AecDumpMessageFilter;
 class AppCacheDispatcher;
-class AecDumpMessageFilter;
 class AudioInputMessageFilter;
 class AudioMessageFilter;
+class AudioOutputClient;
 class AudioRendererMixerManager;
 class BlobMessageFilter;
 class BluetoothMessageFilter;
 class BrowserPluginManager;
 class CacheStorageDispatcher;
 class CompositorForwardingMessageFilter;
 class ContextProviderCommandBuffer;
 class DBMessageFilter;
 class DevToolsAgentFilter;
 class DomStorageDispatcher;
@@ skipping 532 matching lines @@
 #endif
 
   scoped_refptr<BluetoothMessageFilter> bluetooth_message_filter_;
 
   scoped_refptr<ContextProviderCommandBuffer> shared_main_thread_contexts_;
 
   base::ObserverList<RenderThreadObserver> observers_;
 
   scoped_refptr<ContextProviderCommandBuffer> shared_worker_context_provider_;
 
+  scoped_refptr<content::AudioOutputClient> audio_output_client_;

[Henrik Grunell, 2016/05/20 13:35:41]

Isn't there one AOC per frame? Then it should be per frame and not per render
thread (which is equivalent to render process).

[rchtara, 2016/05/27 15:24:38]

Done.

   std::unique_ptr<AudioRendererMixerManager> audio_renderer_mixer_manager_;
   std::unique_ptr<media::AudioHardwareConfig> audio_hardware_config_;
 
   HistogramCustomizer histogram_customizer_;
 
   std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
 
 #if defined(ENABLE_WEBRTC)
   std::unique_ptr<WebRTCIdentityService> webrtc_identity_service_;
 #endif
@@ skipping 57 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_