Pass camera facing info to audio client

content/browser/renderer_host/media/media_stream_manager.cc

Index: content/browser/renderer_host/media/media_stream_manager.cc
diff --git a/content/browser/renderer_host/media/media_stream_manager.cc b/content/browser/renderer_host/media/media_stream_manager.cc
index 029b0638c4e3ced5da47532ccb1c32e5b6504b51..099ade5c1922cb7334c7a3fdebb47c65f8f4ccee 100644
--- a/content/browser/renderer_host/media/media_stream_manager.cc
+++ b/content/browser/renderer_host/media/media_stream_manager.cc
@@ -461,6 +461,19 @@ MediaDevicesManager* MediaStreamManager::media_devices_manager() {
   return media_devices_manager_.get();
 }
 
+void MediaStreamManager::AddVideoCaptureObserver(

[tommi (sloooow) - chröme, 2017/02/14 09:11:19]

please make sure that these to methods are always called on the IO thread, like
all the other methods that touch the video capture manager.
(and add  DCHECK_CURRENTLY_ON(BrowserThread::IO) at the top)

[shenghao, 2017/02/15 03:00:38]

Done.

+    media::VideoCaptureObserver* capture_observer) {
+  if (video_capture_manager_.get() != nullptr) {
+    video_capture_manager_->AddVideoCaptureObserver(capture_observer);
+  }
+}
+
+void MediaStreamManager::RemoveAllVideoCaptureObservers() {
+  if (video_capture_manager_.get() != nullptr) {
+    video_capture_manager_->RemoveAllVideoCaptureObservers();
+  }
+}
+
 std::string MediaStreamManager::MakeMediaAccessRequest(
     int render_process_id,
     int render_frame_id,