Enable Cyclic Refresh for VP9.

remoting/codec/video_encoder_vpx.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_CODEC_VIDEO_ENCODER_VPX_H_
 #define REMOTING_CODEC_VIDEO_ENCODER_VPX_H_
 
 #include "base/callback.h"
 #include "base/time/time.h"
 #include "remoting/codec/scoped_vpx_codec.h"
@@ skipping 29 matching lines @@
   // with the configured lossless color & encoding modes.
   void Configure(const webrtc::DesktopSize& size);
 
   // Prepares |image_| for encoding. Writes updated rectangles into
   // |updated_region|.
   void PrepareImage(const webrtc::DesktopFrame& frame,
                     webrtc::DesktopRegion* updated_region);
 
   // Updates the active map according to |updated_region|. Active map is then
   // given to the encoder to speed up encoding.
-  void PrepareActiveMap(const webrtc::DesktopRegion& updated_region);
+  void SetActiveMapFromRegion(const webrtc::DesktopRegion& updated_region);
+
+  // Adds areas changed in the most recent frame to |updated_region|. This
+  // includes both content changes and areas enhanced by cyclic refresh.
+  void UpdateRegionFromActiveMap(webrtc::DesktopRegion* updated_region);
 
   // True if the encoder is for VP9, false for VP8.
   const bool use_vp9_;
 
   // Options controlling VP9 encode quantization and color space.
   // These are always off (false) for VP8.
   bool lossless_encode_;
   bool lossless_color_;
 
   // Holds the initialized & configured codec.
@@ skipping 13 matching lines @@
 
   // Used to help initialize VideoPackets from DesktopFrames.
   VideoEncoderHelper helper_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoEncoderVpx);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CODEC_VIDEO_ENCODER_VP8_H_