Add mojo interface+impl for audio stream control.

content/browser/renderer_host/media/audio_renderer_host.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.
 //
 // AudioRendererHost serves audio related requests from AudioRenderer which
 // lives inside the render process and provide access to audio hardware.
 //
 // This class is owned by RenderProcessHostImpl, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread, so we
 // need to be extra careful about the lifetime of this object. AudioManager is a
@@ skipping 29 matching lines @@
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_
 
 #include <map>
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "content/browser/renderer_host/media/audio_output_authorization_handler.h"
-#include "content/browser/renderer_host/media/audio_output_delegate.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/render_process_host.h"
+#include "media/audio/audio_output_delegate.h"
 
 namespace base {
 class SharedMemory;
 class CancelableSyncSocket;
 }
 
 namespace media {
 class AudioManager;
 class AudioParameters;
 }
 
 namespace content {
 
 class AudioMirroringManager;
 class MediaStreamManager;
 
 class CONTENT_EXPORT AudioRendererHost
     : public BrowserMessageFilter,
-      public AudioOutputDelegate::EventHandler {
+      public media::AudioOutputDelegate::EventHandler {
  public:
   // Called from UI thread from the owner of this object.
   AudioRendererHost(int render_process_id,
                     media::AudioManager* audio_manager,
                     AudioMirroringManager* mirroring_manager,
                     MediaStreamManager* media_stream_manager,
                     const std::string& salt);
 
   // Calls |callback| with the list of AudioOutputControllers for this object.
   void GetOutputControllers(
@@ skipping 20 matching lines @@
   friend class MockAudioRendererHost;
   friend class TestAudioRendererHost;
   FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, CreateMockStream);
   FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, MockStreamDataConversation);
 
   // Internal callback type for access requests to output devices.
   // |have_access| is true only if there is permission to access the device.
   typedef base::Callback<void(bool have_access)> OutputDeviceAccessCB;
 
   using AudioOutputDelegateVector =
-      std::vector<std::unique_ptr<AudioOutputDelegate>>;
+      std::vector<std::unique_ptr<media::AudioOutputDelegate>>;
 
   // The type of a function that is run on the UI thread to check whether the
   // routing IDs reference a valid RenderFrameHost. The function then runs
   // |callback| on the IO thread with true/false if valid/invalid.
   using ValidateRenderFrameIdFunction =
       void (*)(int render_process_id,
                int render_frame_id,
                const base::Callback<void(bool)>& callback);
 
   ~AudioRendererHost() override;
@@ skipping 55 matching lines @@
 
   RenderProcessHost::AudioOutputControllerList DoGetOutputControllers() const;
 
   // Send an error message to the renderer.
   void SendErrorMessage(int stream_id);
 
   // Helper methods to look up a AudioOutputDelegate identified by |stream_id|.
   // Returns delegates_.end() if not found.
   AudioOutputDelegateVector::iterator LookupIteratorById(int stream_id);
   // Returns nullptr if not found.
-  AudioOutputDelegate* LookupById(int stream_id);
+  media::AudioOutputDelegate* LookupById(int stream_id);
 
   // Helper method to check if the authorization procedure for stream
   // |stream_id| has started.
   bool IsAuthorizationStarted(int stream_id);
 
   // Called from AudioRendererHostTest to override the function that checks for
   // the existence of the RenderFrameHost at stream creation time.
   void set_render_frame_id_validate_function_for_testing(
       ValidateRenderFrameIdFunction function) {
     validate_render_frame_id_function_ = function;
@@ skipping 26 matching lines @@
   ValidateRenderFrameIdFunction validate_render_frame_id_function_;
 
   AudioOutputAuthorizationHandler authorization_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_