Adds support for ArrayBufferContents with external buffer.

third_party/WebKit/Source/bindings/tests/results/core/V8ArrayBuffer.cpp

 // Copyright 2014 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.
 
 // This file has been auto-generated by code_generator_v8.py.
 // DO NOT MODIFY!
 
 // This file has been generated from the Jinja2 template in
 // third_party/WebKit/Source/bindings/templates/interface.cpp.tmpl
 
@@ skipping 46 matching lines @@
   if (v8buffer->IsExternal()) {
     const WrapperTypeInfo* wrapperTypeInfo = toWrapperTypeInfo(object);
     CHECK(wrapperTypeInfo);
     CHECK_EQ(wrapperTypeInfo->ginEmbedder, gin::kEmbedderBlink);
     return toScriptWrappable(object)->toImpl<TestArrayBuffer>();
   }
 
   // Transfer the ownership of the allocated memory to an ArrayBuffer without
   // copying.
   v8::ArrayBuffer::Contents v8Contents = v8buffer->Externalize();
-  WTF::ArrayBufferContents contents(v8Contents.Data(), v8Contents.ByteLength(), WTF::ArrayBufferContents::NotShared);
+  WTF::ArrayBufferContents::DataHandle data(v8Contents.Data(), WTF::ArrayBufferContents::freeMemory);
+  WTF::ArrayBufferContents contents(std::move(data), v8Contents.ByteLength(), WTF::ArrayBufferContents::NotShared);
   TestArrayBuffer* buffer = TestArrayBuffer::create(contents);
   v8::Local<v8::Object> associatedWrapper = buffer->associateWithWrapper(v8::Isolate::GetCurrent(), buffer->wrapperTypeInfo(), object);
   DCHECK(associatedWrapper == object);
 
   return buffer;
 }
 
 TestArrayBuffer* V8ArrayBuffer::toImplWithTypeCheck(v8::Isolate* isolate, v8::Local<v8::Value> value) {
   return value->IsArrayBuffer() ? toImpl(v8::Local<v8::Object>::Cast(value)) : nullptr;
 }
 
 }  // namespace blink