cc: Remove OutputSurface::SetThrottleFrameProduction()

And it doesn't have its body :)

R=brianderson@chromium.org
BUG=NONE
TEST=NONE(non functional change)

Review URL: https://codereview.chromium.org/515573005

Cr-Commit-Position: refs/heads/master@{#292424}

cc/output/output_surface.h

@@ -102,9 +102,6 @@ class CC_EXPORT OutputSurface {
   // deferred_gl_initialization capability.
   void ReleaseContextProvider();
 
-  // Enable or disable vsync.
-  void SetThrottleFrameProduction(bool enable);
-
   virtual void EnsureBackbuffer();
   virtual void DiscardBackbuffer();