Fix compile error after r19955

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 18 matching lines @@
 #define V8_V8_PROFILER_H_
 
 #include "v8.h"
 
 /**
  * Profiler support for the V8 JavaScript engine.
  */
 namespace v8 {
 
 class HeapGraphNode;
-class HeapStatsUpdate;
+struct HeapStatsUpdate;
 
 typedef uint32_t SnapshotObjectId;
 
 /**
  * CpuProfileNode represents a node in a call graph.
  */
 class V8_EXPORT CpuProfileNode {
  public:
   /** Returns function name (empty string for anonymous functions.) */
   Handle<String> GetFunctionName() const;
@@ skipping 563 matching lines @@
   uint32_t index;  // Index of the time interval that was changed.
   uint32_t count;  // New value of count field for the interval with this index.
   uint32_t size;  // New value of size field for the interval with this index.
 };
 
 
 }  // namespace v8
 
 
 #endif  // V8_V8_PROFILER_H_