Additional DCHECKs when accessing SharedArrayBuffer

third_party/WebKit/Source/core/dom/DOMSharedArrayBuffer.cpp

 // 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.
 
 #include "core/dom/DOMSharedArrayBuffer.h"
 
 #include "bindings/core/v8/DOMDataStore.h"
 
 namespace blink {
 
 v8::Local<v8::Object> DOMSharedArrayBuffer::wrap(
     v8::Isolate* isolate,
     v8::Local<v8::Object> creationContext) {
   DCHECK(!DOMDataStore::containsWrapper(this, isolate));
 
   const WrapperTypeInfo* wrapperTypeInfo = this->wrapperTypeInfo();
   v8::Local<v8::Object> wrapper =
-      v8::SharedArrayBuffer::New(isolate, data(), byteLength());
+      v8::SharedArrayBuffer::New(isolate, buffer()->dataShared(), byteLength());
 
   return associateWithWrapper(isolate, wrapperTypeInfo, wrapper);
 }
 
 }  // namespace blink