Add a UseCounter that measures the amount of memory used in PartitionAlloc

Source/wtf/WTF.cpp

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 24 matching lines @@
 #include "wtf/FastMalloc.h"
 #include "wtf/Partitions.h"
 
 namespace WTF {
 
 extern void initializeThreading();
 
 bool s_initialized;
 bool s_shutdown;
 
-void initialize(TimeFunction currentTimeFunction, TimeFunction monotonicallyIncreasingTimeFunction)
+void initialize(TimeFunction currentTimeFunction, TimeFunction monotonicallyIncreasingTimeFunction, HistogramEnumerationFunction histogramEnumerationFunction)
 {
     // WTF, and Blink in general, cannot handle being re-initialized, even if shutdown first.
     // Make that explicit here.
     ASSERT(!s_initialized);
     ASSERT(!s_shutdown);
     s_initialized = true;
     setCurrentTimeFunction(currentTimeFunction);
     setMonotonicallyIncreasingTimeFunction(monotonicallyIncreasingTimeFunction);
-    Partitions::initialize();
+    Partitions::initialize(histogramEnumerationFunction);
     initializeThreading();
 }
 
 void shutdown()
 {
     ASSERT(s_initialized);
     ASSERT(!s_shutdown);
     s_shutdown = true;
     Partitions::shutdown();
 }
 
 bool isShutdown()
 {
     return s_shutdown;
 }
 
 } // namespace WTF