device/bluetooth:Implement Register() for BluetoothAudioSinkChromeOS.

device/bluetooth/bluetooth_audio_sink_chromeos.h

Index: device/bluetooth/bluetooth_audio_sink_chromeos.h
diff --git a/device/bluetooth/bluetooth_audio_sink_chromeos.h b/device/bluetooth/bluetooth_audio_sink_chromeos.h
index 3f9f839ddaebea0fd2e287be735849aa6ef202f1..8561fd962ca7ebf5acea6eed79a289aa338b82f6 100644
--- a/device/bluetooth/bluetooth_audio_sink_chromeos.h
+++ b/device/bluetooth/bluetooth_audio_sink_chromeos.h
@@ -18,12 +18,13 @@
 #include "dbus/file_descriptor.h"
 #include "dbus/object_path.h"
 #include "device/bluetooth/bluetooth_adapter.h"
-#include "device/bluetooth/bluetooth_adapter_chromeos.h"
 #include "device/bluetooth/bluetooth_audio_sink.h"
 #include "device/bluetooth/bluetooth_export.h"
 
 namespace chromeos {
 
+class BluetoothAdapterChromeOS;
+
 class DEVICE_BLUETOOTH_EXPORT BluetoothAudioSinkChromeOS
     : public device::BluetoothAudioSink,
       public device::BluetoothAdapter::Observer,
@@ -39,11 +40,9 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAudioSinkChromeOS
   device::BluetoothAudioSink::State GetState() const override;
   uint16_t GetVolume() const override;
 
-  // device::BluetoothAdapter::Observer overrides.
+  // device::BluetoothAdapter::Observer override.

[Ben Chan, 2015/01/28 15:54:27]

this change is probably not necessary. see // BluetoothMediaClient::Observer
overrides below

[Miao, 2015/01/28 22:34:20]

Done.

   void AdapterPresentChanged(device::BluetoothAdapter* adapter,
                              bool present) override;
-  void AdapterPoweredChanged(device::BluetoothAdapter* adapter,
-                             bool powered) override;
 
   // BluetoothMediaClient::Observer overrides.
   void MediaRemoved(const dbus::ObjectPath& object_path) override;
@@ -88,6 +87,14 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAudioSinkChromeOS
   // updated.
   void VolumeChanged(uint16_t volume);
 
+  // Called when the registration of Media Endpoint has succeeded.
+  void OnRegisterSucceeded(const base::Closure& callback);
+
+  // Called when the registration of Media Endpoint failed.
+  void OnRegisterFailed(const BluetoothAudioSink::ErrorCallback& error_back,

[Ben Chan, 2015/01/28 15:54:27]

error_back?

[Miao, 2015/01/28 22:34:21]

s/error_back/error_callback

+                        const std::string& error_name,
+                        const std::string& error_message);
+
   // Reads from the file descriptor acquired via Media Transport object and
   // notify |observer_| while the audio data is available.
   void ReadFromFD();
@@ -96,12 +103,6 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAudioSinkChromeOS
   // device.
   device::BluetoothAudioSink::State state_;
 
-  // Indicates whether the adapter is present.
-  bool present_;
-
-  // Indicates whether the adapter is powered.
-  bool powered_;
-
   // The volume control by the remote device during the streaming.
   uint16_t volume_;