Remove unused VideoFrameCapturer::size_most_recent() method.

remoting/capturer/video_frame_capturer_win.cc

Index: remoting/capturer/video_frame_capturer_win.cc
diff --git a/remoting/capturer/video_frame_capturer_win.cc b/remoting/capturer/video_frame_capturer_win.cc
index d39ee649ed70a02ca47e74dae53baa8cc443f8f4..59e978c517ba515c370fb15ac78c7c1511726ce3 100644
--- a/remoting/capturer/video_frame_capturer_win.cc
+++ b/remoting/capturer/video_frame_capturer_win.cc
@@ -86,7 +86,6 @@ class VideoFrameCapturerWin : public VideoFrameCapturer {
   virtual void Stop() OVERRIDE;
   virtual void InvalidateRegion(const SkRegion& invalid_region) OVERRIDE;
   virtual void CaptureFrame() OVERRIDE;
-  virtual const SkISize& size_most_recent() const OVERRIDE;
 
  private:
   // Make sure that the device contexts match the screen configuration.
@@ -275,10 +274,6 @@ void VideoFrameCapturerWin::CaptureFrame() {
   CaptureCursor();
 }
 
-const SkISize& VideoFrameCapturerWin::size_most_recent() const {
-  return helper_.size_most_recent();
-}
-
 void VideoFrameCapturerWin::Start(Delegate* delegate) {
   DCHECK(delegate_ == NULL);