Add audio_device_id in mojo media ServiceFactory CreateRenderer api.

media/mojo/services/media_mojo_unittest.cc

Index: media/mojo/services/media_mojo_unittest.cc
diff --git a/media/mojo/services/media_mojo_unittest.cc b/media/mojo/services/media_mojo_unittest.cc
index 6553dd8c32a63b25954a9b1a3f04948a6a73a543..12db5dd6884f939936eb5ae6e97ef1b73ca2a4e7 100644
--- a/media/mojo/services/media_mojo_unittest.cc
+++ b/media/mojo/services/media_mojo_unittest.cc
@@ -104,7 +104,7 @@ class MediaServiceTest : public shell::test::ServiceTest {
 
   void InitializeRenderer(const VideoDecoderConfig& video_config,
                           bool expected_result) {
-    service_factory_->CreateRenderer(mojo::GetProxy(&renderer_));
+    service_factory_->CreateRenderer(std::string(), mojo::GetProxy(&renderer_));
 
     video_stream_.set_video_decoder_config(video_config);