Remove the high-priority flag from IdleNotification() since...

include/v8.h

Index: include/v8.h
===================================================================
--- include/v8.h	(revision 3013)
+++ include/v8.h	(working copy)
@@ -2350,12 +2350,11 @@
    * Optional notification that the embedder is idle.
    * V8 uses the notification to reduce memory footprint.
    * This call can be used repeatedly if the embedder remains idle.
-   * \param is_high_priority tells whether the embedder is high priority.
    * Returns true if the embedder should stop calling IdleNotification
    * until real work has been done.  This indicates that V8 has done
    * as much cleanup as it will be able to do.
    */
-  static bool IdleNotification(bool is_high_priority);
+  static bool IdleNotification();
 
   /**
    * Optional notification that the system is running low on memory.