VideoCapturerDelegate: Retrieve supported/in-use format(s) for constraint negotiation

content/renderer/media/media_stream_video_source.h

Index: content/renderer/media/media_stream_video_source.h
diff --git a/content/renderer/media/media_stream_video_source.h b/content/renderer/media/media_stream_video_source.h
index 4164ffbdf05cbb90c4813bca33fb60549ab11e12..24c7b58453889ac7d1e2d9a83d37b1747e536ca6 100644
--- a/content/renderer/media/media_stream_video_source.h
+++ b/content/renderer/media/media_stream_video_source.h
@@ -101,7 +101,7 @@ class CONTENT_EXPORT MediaStreamVideoSource
                                           int max_requested_height) = 0;
   void OnSupportedFormats(const media::VideoCaptureFormats& formats);
 
-  // An implementation must starts capture frames using the resolution in
+  // An implementation must start capture frames using the resolution in
   // |params|. When the source has started or the source failed to start
   // OnStartDone must be called. An implementation must call
   // DeliverVideoFrame with the captured frames.