Remove ArrayBufferDeallocationObserver

Source/wtf/ArrayBufferContents.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. 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 with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ArrayBufferContents_h
 #define ArrayBufferContents_h
 
-#include "wtf/ArrayBufferDeallocationObserver.h"
+#include "wtf/Assertions.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/WTF.h"
 #include "wtf/WTFExport.h"
 
 namespace WTF {
 
 class WTF_EXPORT ArrayBufferContents {
     WTF_MAKE_NONCOPYABLE(ArrayBufferContents);
 public:
     enum InitializationPolicy {
         ZeroInitialize,
         DontInitialize
     };
 
     ArrayBufferContents();
     ArrayBufferContents(unsigned numElements, unsigned elementByteSize, ArrayBufferContents::InitializationPolicy);
 
     // Use with care. data must be allocated with allocateMemory.
     // ArrayBufferContents will take ownership of the data and free it (using freeMemory)
     // upon destruction.
     // This constructor will not call observer->StartObserving(), so it is a responsibility
     // of the caller to make sure JS knows about external memory.
-    ArrayBufferContents(void* data, unsigned sizeInBytes, ArrayBufferDeallocationObserver*);
+    ArrayBufferContents(void* data, unsigned sizeInBytes);
 
     ~ArrayBufferContents();
 
     void clear();
 
     void* data() const { return m_data; }
     unsigned sizeInBytes() const { return m_sizeInBytes; }
 
-    void setDeallocationObserver(ArrayBufferDeallocationObserver& observer)
-    {
-        if (!m_deallocationObserver) {
-            m_deallocationObserver = &observer;
-            m_deallocationObserver->blinkAllocatedMemory(m_sizeInBytes);
-        }
-    }
-    void setDeallocationObserverWithoutAllocationNotification(ArrayBufferDeallocationObserver& observer)
-    {
-        if (!m_deallocationObserver) {
-            m_deallocationObserver = &observer;
-        }
-    }
-
     void transfer(ArrayBufferContents& other);
     void copyTo(ArrayBufferContents& other);
 
     static void allocateMemory(size_t, InitializationPolicy, void*&);
     static void freeMemory(void*, size_t);
+    static void setAllocationListener(ArrayBufferAllocationListenerFunction listener)
+    {
+        ASSERT(!allocationListener);
+        allocationListener = listener;
+    }
 
 private:
     void* m_data;
     unsigned m_sizeInBytes;
-    ArrayBufferDeallocationObserver* m_deallocationObserver;
+    static ArrayBufferAllocationListenerFunction allocationListener;
 };
 
 } // namespace WTF
 
 #endif // ArrayBufferContents_h