Revert of Remove default begin frame sources from the renderer

cc/output/output_surface_client.h

Index: cc/output/output_surface_client.h
diff --git a/cc/output/output_surface_client.h b/cc/output/output_surface_client.h
index 53e7a0288ab05ea07e6eb5149971d04196253dd4..bc6753958baf00e6dfe660d2162192070e8c6326 100644
--- a/cc/output/output_surface_client.h
+++ b/cc/output/output_surface_client.h
@@ -25,6 +25,9 @@
 
 class CC_EXPORT OutputSurfaceClient {
  public:
+  // TODO(enne): Remove this in favor of using SetBeginFrameSource.
+  virtual void CommitVSyncParameters(base::TimeTicks timebase,
+                                     base::TimeDelta interval) = 0;
   // Pass the begin frame source for the client to observe.  Client does not own
   // the BeginFrameSource.  OutputSurface should call this once after binding to
   // the client and then call again with a null while detaching.