Add DOMSharedArrayBuffer type

Source/core/dom/DOMSharedArrayBuffer.cpp

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// 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 "config.h"
-#include "core/dom/DOMArrayBuffer.h"
+#include "core/dom/DOMSharedArrayBuffer.h"
 
 #include "bindings/core/v8/DOMDataStore.h"
 #include "bindings/core/v8/V8DOMWrapper.h"
 
 namespace blink {
 
-v8::Local<v8::Object> DOMArrayBuffer::wrap(v8::Isolate* isolate, v8::Local<v8::Object> creationContext)
+v8::Local<v8::Object> DOMSharedArrayBuffer::wrap(v8::Isolate* isolate, v8::Local<v8::Object> creationContext)
 {
     // It's possible that no one except for the new wrapper owns this object at
     // this moment, so we have to prevent GC to collect this object until the
     // object gets associated with the wrapper.
-    RefPtr<DOMArrayBuffer> protect(this);
+    RefPtr<DOMSharedArrayBuffer> protect(this);
 
     ASSERT(!DOMDataStore::containsWrapper(this, isolate));
 
     const WrapperTypeInfo* wrapperTypeInfo = this->wrapperTypeInfo();
-    v8::Local<v8::Object> wrapper = v8::ArrayBuffer::New(isolate, data(), byteLength());
-    // V8::ArrayBuffer::New may run an arbitrary script and it may result in
+    v8::Local<v8::Object> wrapper = v8::SharedArrayBuffer::New(isolate, data(), byteLength());
+    // V8::SharedArrayBuffer::New may run an arbitrary script and it may result in
     // creating a new wrapper and associating it with |this|.  If so, the
     // wrapper already created and associated must be used.
     v8::Local<v8::Object> associatedWrapper = DOMDataStore::getWrapper(this, isolate);
     if (UNLIKELY(!associatedWrapper.IsEmpty()))
         return associatedWrapper;
 
     return associateWithWrapper(isolate, wrapperTypeInfo, wrapper);
 }
 
-v8::Local<v8::Object> DOMArrayBuffer::associateWithWrapper(v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo, v8::Local<v8::Object> wrapper)
+v8::Local<v8::Object> DOMSharedArrayBuffer::associateWithWrapper(v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo, v8::Local<v8::Object> wrapper)
 {
-    // This function does not set a deallocation observer to the underlying
-    // array buffer.  It's a caller's duty.
-
     return V8DOMWrapper::associateObjectWithWrapper(isolate, this, wrapperTypeInfo, wrapper);
 }
 
 } // namespace blink