[SharedArrayBuffer] Add "AllowShared" extended attribute, used for WebGL

third_party/WebKit/Source/core/dom/DOMArrayBufferView.h

 // 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.
 
 #ifndef DOMArrayBufferView_h
 #define DOMArrayBufferView_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/dom/DOMArrayBuffer.h"
@@ skipping 51 matching lines @@
 
   ViewType GetType() const { return View()->GetType(); }
   const char* TypeName() { return View()->TypeName(); }
   void* BaseAddress() const { return View()->BaseAddress(); }
   unsigned byteOffset() const { return View()->ByteOffset(); }
   unsigned byteLength() const { return View()->ByteLength(); }
   unsigned TypeSize() const { return View()->TypeSize(); }
   void SetNeuterable(bool flag) { return View()->SetNeuterable(flag); }
   bool IsShared() const { return View()->IsShared(); }
 
+  void* BaseAddressMaybeShared() const {
+    return View()->BaseAddressMaybeShared();
+  }
+
   v8::Local<v8::Object> Wrap(v8::Isolate*,
                              v8::Local<v8::Object> creation_context) override {
     NOTREACHED();
     return v8::Local<v8::Object>();
   }
 
   DEFINE_INLINE_VIRTUAL_TRACE() { visitor->Trace(dom_array_buffer_); }
 
  protected:
   explicit DOMArrayBufferView(PassRefPtr<WTF::ArrayBufferView> buffer_view)
@@ skipping 10 matching lines @@
   }
 
  private:
   RefPtr<WTF::ArrayBufferView> buffer_view_;
   mutable Member<DOMArrayBufferBase> dom_array_buffer_;
 };
 
 }  // namespace blink
 
 #endif  // DOMArrayBufferView_h