device/bluetooth: Remove BluetoothAdapter::Start|StopDiscovering.

device/bluetooth/test/mock_bluetooth_adapter.h

Index: device/bluetooth/test/mock_bluetooth_adapter.h
diff --git a/device/bluetooth/test/mock_bluetooth_adapter.h b/device/bluetooth/test/mock_bluetooth_adapter.h
index 3a959e94ef8b31f889f0bd51b090ce70a8fd7faa..32f40d1a1f8dc4f29d42d53a8a5d371e6c0012d3 100644
--- a/device/bluetooth/test/mock_bluetooth_adapter.h
+++ b/device/bluetooth/test/mock_bluetooth_adapter.h
@@ -55,12 +55,6 @@ class MockBluetoothAdapter : public BluetoothAdapter {
   MOCK_METHOD2(StartDiscoverySession,
                void(const DiscoverySessionCallback& callback,
                     const ErrorCallback& error_callback));
-  MOCK_METHOD2(StartDiscovering,
-               void(const base::Closure& callback,
-                    const ErrorCallback& error_callback));
-  MOCK_METHOD2(StopDiscovering,
-               void(const base::Closure& callback,
-                    const ErrorCallback& error_callback));
   MOCK_CONST_METHOD0(GetDevices, BluetoothAdapter::ConstDeviceList());
   MOCK_METHOD1(GetDevice, BluetoothDevice*(const std::string& address));
   MOCK_CONST_METHOD1(GetDevice,