device/bluetooth:Implement Register() for BluetoothAudioSinkChromeOS.

chromeos/dbus/fake_bluetooth_media_client.h

Index: chromeos/dbus/fake_bluetooth_media_client.h
diff --git a/chromeos/dbus/fake_bluetooth_media_client.h b/chromeos/dbus/fake_bluetooth_media_client.h
index b355c65442e7adf136371b32155519ab4e42fd45..1cb7ba9ca09fe4bd18f97e6e80f9adb7ddeef124 100644
--- a/chromeos/dbus/fake_bluetooth_media_client.h
+++ b/chromeos/dbus/fake_bluetooth_media_client.h
@@ -11,6 +11,8 @@
 #include "chromeos/dbus/bluetooth_media_client.h"
 #include "dbus/object_path.h"
 
+using dbus::ObjectPath;
+
 namespace chromeos {
 
 class CHROMEOS_EXPORT FakeBluetoothMediaClient : public BluetoothMediaClient {
@@ -24,13 +26,13 @@ class CHROMEOS_EXPORT FakeBluetoothMediaClient : public BluetoothMediaClient {
   // BluetoothMediaClient overrides.
   void AddObserver(BluetoothMediaClient::Observer* observer) override;
   void RemoveObserver(BluetoothMediaClient::Observer* observer) override;
-  void RegisterEndpoint(const dbus::ObjectPath& object_path,
-                        const dbus::ObjectPath& endpoint_path,
+  void RegisterEndpoint(const ObjectPath& object_path,
+                        const ObjectPath& endpoint_path,
                         const EndpointProperties& properties,
                         const base::Closure& callback,
                         const ErrorCallback& error_callback) override;
-  void UnregisterEndpoint(const dbus::ObjectPath& object_path,
-                          const dbus::ObjectPath& endpoint_path,
+  void UnregisterEndpoint(const ObjectPath& object_path,
+                          const ObjectPath& endpoint_path,
                           const base::Closure& callback,
                           const ErrorCallback& error_callback) override;