Pass camera facing info to audio client

chromeos/dbus/cras_audio_client.cc

 // Copyright (c) 2013 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 "chromeos/dbus/cras_audio_client.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/format_macros.h"
+#include "base/logging.h"
 #include "base/macros.h"
 #include "base/strings/stringprintf.h"
 #include "dbus/bus.h"
 #include "dbus/message.h"
 #include "dbus/object_path.h"
 #include "dbus/object_proxy.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace chromeos {
 
@@ skipping 14 matching lines @@
   }
 
   void RemoveObserver(Observer* observer) override {
     observers_.RemoveObserver(observer);
   }
 
   bool HasObserver(const Observer* observer) const override {
     return observers_.HasObserver(observer);
   }
 
+  void OnVideoCaptureStarted(VideoFacingMode facing) override {
+    // TODO(jennyz): Switch active audio device according to video facing.
+  }
+
   void GetVolumeState(const GetVolumeStateCallback& callback) override {
     dbus::MethodCall method_call(cras::kCrasControlInterface,
                                  cras::kGetVolumeState);
     cras_proxy_->CallMethod(
         &method_call,
         dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
         base::Bind(&CrasAudioClientImpl::OnGetVolumeState,
                    weak_ptr_factory_.GetWeakPtr(), callback));
   }
 
@@ skipping 457 matching lines @@
 
 CrasAudioClient::~CrasAudioClient() {
 }
 
 // static
 CrasAudioClient* CrasAudioClient::Create() {
   return new CrasAudioClientImpl();
 }
 
 }  // namespace chromeos