Let getSettings() return the constrained track resolution, not source.

content/renderer/media/video_track_adapter.h

Index: content/renderer/media/video_track_adapter.h
diff --git a/content/renderer/media/video_track_adapter.h b/content/renderer/media/video_track_adapter.h
index ddd73efd9d47010ff9f643c2c06f02647d335e46..340bf86405ab90475643aa484f4fac0082b045dd 100644
--- a/content/renderer/media/video_track_adapter.h
+++ b/content/renderer/media/video_track_adapter.h
@@ -65,6 +65,12 @@ class VideoTrackAdapter
                             const OnMutedCallback& on_muted_callback);
   void StopFrameMonitoring();
 
+  static void CalculateTargetSize(const gfx::Size& input_size,
+                                  const gfx::Size& max_frame_size,
+                                  double min_aspect_ratio,
+                                  double max_aspect_ratio,
+                                  gfx::Size* desired_size);
+
  private:
   virtual ~VideoTrackAdapter();
   friend class base::RefCountedThreadSafe<VideoTrackAdapter>;