Adds support for ArrayBufferContents with external buffer.

third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp

 /*
  * Copyright (C) 2009 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
@@ skipping 371 matching lines @@
   isolate->SetUseCounterCallback(&useCounterCallback);
 }
 
 namespace {
 
 class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
   // Allocate() methods return null to signal allocation failure to V8, which
   // should respond by throwing a RangeError, per
   // http://www.ecma-international.org/ecma-262/6.0/#sec-createbytedatablock.
   void* Allocate(size_t size) override {
-    void* data;
-    WTF::ArrayBufferContents::allocateMemoryOrNull(
-        size, WTF::ArrayBufferContents::ZeroInitialize, data);
-    return data;
+    return WTF::ArrayBufferContents::allocateMemoryOrNull(
+        size, WTF::ArrayBufferContents::ZeroInitialize);
   }
 
   void* AllocateUninitialized(size_t size) override {
-    void* data;
-    WTF::ArrayBufferContents::allocateMemoryOrNull(
-        size, WTF::ArrayBufferContents::DontInitialize, data);
-    return data;
+    return WTF::ArrayBufferContents::allocateMemoryOrNull(
+        size, WTF::ArrayBufferContents::DontInitialize);
   }
 
   void Free(void* data, size_t size) override {
-    WTF::ArrayBufferContents::freeMemory(data, size);
+    WTF::ArrayBufferContents::freeMemory(data);
   }
 };
 
 }  // namespace
 
 static void adjustAmountOfExternalAllocatedMemory(int64_t diff) {
 #if DCHECK_IS_ON()
   DEFINE_THREAD_SAFE_STATIC_LOCAL(int64_t, processTotal, new int64_t(0));
   DEFINE_THREAD_SAFE_STATIC_LOCAL(Mutex, mutex, new Mutex);
   {
@@ skipping 145 matching lines @@
           v8::Isolate::kMessageLog);
   isolate->SetFatalErrorHandler(reportFatalErrorInWorker);
 
   uint32_t here;
   isolate->SetStackLimit(reinterpret_cast<uintptr_t>(&here) -
                          kWorkerMaxStackSize);
   isolate->SetPromiseRejectCallback(promiseRejectHandlerInWorker);
 }
 
 }  // namespace blink