Remove shaped desktop support from remoting host and client.

remoting/client/plugin/pepper_video_renderer.h

Index: remoting/client/plugin/pepper_video_renderer.h
diff --git a/remoting/client/plugin/pepper_video_renderer.h b/remoting/client/plugin/pepper_video_renderer.h
index a5637bc3eb27e3110cf3eefbd731987832f8df59..32f5360987bb7e63b1bf140aae6d50ec6d2a480b 100644
--- a/remoting/client/plugin/pepper_video_renderer.h
+++ b/remoting/client/plugin/pepper_video_renderer.h
@@ -44,10 +44,6 @@ class PepperVideoRenderer : public protocol::VideoRenderer {
     virtual void OnVideoSize(const webrtc::DesktopSize& size,
                              const webrtc::DesktopVector& dpi) = 0;
 
-    // Called when desktop shape changes. |shape| should be NULL if frames are
-    // un-shaped.
-    virtual void OnVideoShape(const webrtc::DesktopRegion* shape) = 0;
-
     // Called with each frame's updated region, if EnableDebugDirtyRegion(true)
     // was called.
     virtual void OnVideoFrameDirtyRegion(