Support idle time in CPU profiler

include/v8-profiler.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 204 matching lines @@
    */
   const CpuProfile* StopCpuProfiling(Handle<String> title);
 
   /**
    * Deletes all existing profiles, also cancelling all profiling
    * activity.  All previously returned pointers to profiles and their
    * contents become invalid after this call.
    */
   void DeleteAllCpuProfiles();
 
+  /**
+   * Tells the profiler whether the embedder is idle.
+   */
+  void SetIdle(bool is_idle);
+
  private:
   CpuProfiler();
   ~CpuProfiler();
   CpuProfiler(const CpuProfiler&);
   CpuProfiler& operator=(const CpuProfiler&);
 };
 
 
 class HeapGraphNode;
 
@@ skipping 361 matching lines @@
 };
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 
 
 #endif  // V8_V8_PROFILER_H_