Remove default begin frame sources from the renderer

cc/surfaces/display.cc

Index: cc/surfaces/display.cc
diff --git a/cc/surfaces/display.cc b/cc/surfaces/display.cc
index 6d024e562fb27a0df7091e68a4feb1eb452d75ee..f22c056cdcf1bb32dfb3da844d9b29bc2e388536 100644
--- a/cc/surfaces/display.cc
+++ b/cc/surfaces/display.cc
@@ -358,12 +358,6 @@ void Display::DidSwapBuffersComplete() {
     renderer_->SwapBuffersComplete();
 }
 
-void Display::CommitVSyncParameters(base::TimeTicks timebase,
-                                    base::TimeDelta interval) {
-  // Display uses a BeginFrameSource instead.
-  NOTREACHED();
-}
-
 void Display::DidReceiveTextureInUseResponses(
     const gpu::TextureInUseResponses& responses) {
   if (renderer_)