Replace RectVectors with SkRegions in Decoder.

remoting/base/decoder_row_based.h

Index: remoting/base/decoder_row_based.h
diff --git a/remoting/base/decoder_row_based.h b/remoting/base/decoder_row_based.h
index 7086c7b411ac758ae0aa1ce8426662147327350a..3cd2ddeda23cf59be277e06bfa4cd9a362f35f83 100644
--- a/remoting/base/decoder_row_based.h
+++ b/remoting/base/decoder_row_based.h
@@ -22,7 +22,7 @@ class DecoderRowBased : public Decoder {
   virtual bool IsReadyForData() OVERRIDE;
   virtual void Initialize(scoped_refptr<media::VideoFrame> frame) OVERRIDE;
   virtual DecodeResult DecodePacket(const VideoPacket* packet) OVERRIDE;
-  virtual void GetUpdatedRects(RectVector* rects) OVERRIDE;
+  virtual void GetUpdatedRegion(SkRegion* region) OVERRIDE;
   virtual void Reset() OVERRIDE;
   virtual VideoPacketFormat::Encoding Encoding() OVERRIDE;
 
@@ -63,7 +63,7 @@ class DecoderRowBased : public Decoder {
   // The current row in the rect that we are updaing.
   int row_y_;
 
-  RectVector updated_rects_;
+  SkRegion updated_region_;
 
   DISALLOW_COPY_AND_ASSIGN(DecoderRowBased);
 };