Revert 250798 "Revert of Read compositor VSync information from ..."

trunk/src/ui/compositor/compositor_observer.h

Index: trunk/src/ui/compositor/compositor_observer.h
===================================================================
--- trunk/src/ui/compositor/compositor_observer.h	(revision 250809)
+++ trunk/src/ui/compositor/compositor_observer.h	(working copy)
@@ -38,11 +38,6 @@
   // Called when the compositor lock state changes.
   virtual void OnCompositingLockStateChanged(Compositor* compositor) = 0;
 
-  // Called when the compositor has received updated VSync parameters.
-  virtual void OnUpdateVSyncParameters(Compositor* compositor,
-                                       base::TimeTicks timebase,
-                                       base::TimeDelta interval) = 0;
-
  protected:
   virtual ~CompositorObserver() {}
 };