Ensure LayerTreeHostImpl's current frame time is updated every frame

cc/trees/thread_proxy.cc

Index: cc/trees/thread_proxy.cc
diff --git a/cc/trees/thread_proxy.cc b/cc/trees/thread_proxy.cc
index aff281fb3c1993fb2fa438927ee58e131ed1dd55..c34d644740ca24ee807284e3d6b2d4271d50a776 100644
--- a/cc/trees/thread_proxy.cc
+++ b/cc/trees/thread_proxy.cc
@@ -976,8 +976,6 @@ ThreadProxy::ScheduledActionDrawAndSwapInternal(bool forced_draw) {
   if (draw_frame)
     CheckOutputSurfaceStatusOnImplThread();
 
-  layer_tree_host_impl_->BeginNextFrame();
-
   return result;
 }
 
@@ -1034,6 +1032,7 @@ void ThreadProxy::DidAnticipatedDrawTimeChange(base::TimeTicks time) {
   if (current_resource_update_controller_on_impl_thread_)
     current_resource_update_controller_on_impl_thread_
         ->PerformMoreUpdates(time);
+  layer_tree_host_impl_->BeginNextFrame();

[brianderson, 2013/05/16 18:16:00]

I know this is tangential to what you are changing, but can we rename
BeginNextFrame to UpdateNextFrameTime? BeginNextFrame implies more than what it
is actually doing.

[danakj, 2013/05/16 18:18:09]

It's not quite update either, it's setting things to 0 at the moment so they
will be updated later.

ResetCurrentFrameTime()?

[danakj, 2013/05/16 18:24:07]

Or ResetCurrentFrameTimeForNextFrame(), to say this is being reset cuz we're
moving into the next frame?

[ajuma, 2013/05/16 18:33:33]

I like ResetCurrentFrameTimeForNextFrame().

[ajuma, 2013/05/16 19:50:01]

Renamed to ResetCurrentFrameTimeForNextFrame().

 }
 
 void ThreadProxy::ReadyToFinalizeTextureUpdates() {