Make platform/heap to use USING_FAST_MALLOC.

third_party/WebKit/Source/core/fetch/WebCacheMemoryDumpProvider.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebCacheMemoryDumpProvider_h
 #define WebCacheMemoryDumpProvider_h
 
 #include "core/fetch/MemoryCache.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebCommon.h"
 #include "public/platform/WebMemoryDumpProvider.h"
+#include "wtf/Allocator.h"
 #include "wtf/MainThread.h"
 
 namespace blink {
 
 // This class is wrapper around MemoryCache to take memory snapshots. It dumps
 // the stats of cache only after the cache is created.
 class CORE_EXPORT WebCacheMemoryDumpProvider final : public WebMemoryDumpProvider {
+    USING_FAST_MALLOC(WebCacheMemoryDumpProvider);
 public:
     // This class is singleton since there is a global MemoryCache object.
     static WebCacheMemoryDumpProvider* instance();
     ~WebCacheMemoryDumpProvider() override;
 
     // WebMemoryDumpProvider implementation.
     bool onMemoryDump(WebMemoryDumpLevelOfDetail, WebProcessMemoryDump*) override;
 
     void setMemoryCache(MemoryCache* memoryCache)
     {
         ASSERT(isMainThread());
         m_memoryCache = memoryCache;
     }
 
 private:
     WebCacheMemoryDumpProvider();
 
     WeakPersistent<MemoryCache> m_memoryCache;
 };
 
 } // namespace blink
 
 #endif // WebCacheMemoryDumpProvider_h