Push heap stats as HeapStatsUpdate struct instead of raw array of uint32_t values.

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 541 matching lines @@
  protected:
   RetainedObjectInfo() {}
   virtual ~RetainedObjectInfo() {}
 
  private:
   RetainedObjectInfo(const RetainedObjectInfo&);
   RetainedObjectInfo& operator=(const RetainedObjectInfo&);
 };
 
 
+/**
+ * A struct for exporting HeapStats data from V8, using "push" model.
+ */
+struct HeapStatsUpdate {
+  HeapStatsUpdate(uint32_t index, uint32_t count, uint32_t size)
+    : index(index), count(count), size(size) { }
+  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
 
 
 #undef V8EXPORT
 
 
 #endif  // V8_V8_PROFILER_H_