Teach MainThreadEventQueue about touchmove throttling.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 0b42e605ded890b67dcbb37945f6a3050ff464dd..73684badd00c2254d63debaed2d0bbcf6bdc6b36 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -874,7 +874,8 @@ void RenderWidget::BeginMainFrame(double frame_time_sec) {
   InputHandlerManager* input_handler_manager =
       render_thread ? render_thread->input_handler_manager() : NULL;
   if (input_handler_manager)
-    input_handler_manager->ProcessRafAlignedInputOnMainThread(routing_id_);
+    input_handler_manager->ProcessRafAlignedInputOnMainThread(routing_id_,
+                                                              frame_time_sec);
 
   GetWebWidget()->beginFrame(frame_time_sec);
 }