Add audio_device_id in mojo media ServiceFactory CreateRenderer api.

chromecast/browser/cast_content_browser_client.cc

Index: chromecast/browser/cast_content_browser_client.cc
diff --git a/chromecast/browser/cast_content_browser_client.cc b/chromecast/browser/cast_content_browser_client.cc
index 321755c43dc6727b2578b078f6be6c66ae1711be..b1e6f55488008d2b9694f259475ab017afe41ffc 100644
--- a/chromecast/browser/cast_content_browser_client.cc
+++ b/chromecast/browser/cast_content_browser_client.cc
@@ -154,7 +154,8 @@ CastContentBrowserClient::GetMediaTaskRunner() {
 
 std::unique_ptr<media::MediaPipelineBackend>
 CastContentBrowserClient::CreateMediaPipelineBackend(
-    const media::MediaPipelineDeviceParams& params) {
+    const media::MediaPipelineDeviceParams& params,
+    const std::string& audio_device_id) {
   return media_pipeline_backend_manager()->CreateMediaPipelineBackend(params);
 }