Replace RectVectors with SkRegions in Decoder.

remoting/client/frame_consumer.h

Index: remoting/client/frame_consumer.h
diff --git a/remoting/client/frame_consumer.h b/remoting/client/frame_consumer.h
index 65b0c641b99fd77d20c9aa55266107f740df052b..1bde90fb669c49c04e36c9348b9365ee68ef378b 100644
--- a/remoting/client/frame_consumer.h
+++ b/remoting/client/frame_consumer.h
@@ -40,13 +40,13 @@ class FrameConsumer {
   virtual void ReleaseFrame(media::VideoFrame* frame) = 0;
 
   // OnPartialFrameOutput() is called every time at least one rectangle of
-  // output is produced.  The |frame| is guaranteed to have valid data for every
-  // region included in the |rects| list.
+  // output is produced.  The |frame| is guaranteed to have valid data for all
+  // of |region|.
   //
-  // Both |frame| and |rects| are guaranteed to be valid until the |done|
+  // Both |frame| and |region| are guaranteed to be valid until the |done|
   // callback is invoked.
   virtual void OnPartialFrameOutput(media::VideoFrame* frame,
-                                    RectVector* rects,
+                                    SkRegion* region,
                                     const base::Closure& done) = 0;
 
  private: