Adding ArcBridge Interface for Volume Update Requests

components/arc/audio/arc_audio_bridge.h

 // 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.
 
 #ifndef COMPONENTS_ARC_AUDIO_ARC_AUDIO_BRIDGE_H_
 #define COMPONENTS_ARC_AUDIO_ARC_AUDIO_BRIDGE_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 13 matching lines @@
                        public chromeos::CrasAudioHandler::AudioObserver {
  public:
   explicit ArcAudioBridge(ArcBridgeService* bridge_service);
   ~ArcAudioBridge() override;
 
   // InstanceHolder<mojom::AudioInstance>::Observer overrides.
   void OnInstanceReady() override;
 
   // mojom::AudioHost overrides.
   void ShowVolumeControls() override;
+  void OnSystemVolumeUpdateRequest(int32_t volume) override;

[Luis Héctor Chávez, 2017/06/06 17:57:26]

nit: s/volume/percent/

 
  private:
   mojo::Binding<mojom::AudioHost> binding_;
 
   chromeos::CrasAudioHandler* cras_audio_handler_ = nullptr;
 
   int volume_ = 0;  // Volume range: 0-100.
   bool muted_ = false;
 
   // chromeos::CrasAudioHandler::AudioObserver overrides.
   void OnAudioNodesChanged() override;
   void OnOutputNodeVolumeChanged(uint64_t node_id, int volume) override;
   void OnOutputMuteChanged(bool mute_on, bool system_adjust) override;
 
   void SendSwitchState(bool headphone_inserted, bool microphone_inserted);
   void SendVolumeState();
 
   DISALLOW_COPY_AND_ASSIGN(ArcAudioBridge);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_AUDIO_ARC_AUDIO_BRIDGE_H_