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

third_party/WebKit/Source/modules/peerconnection/RTCDataChannel.h

 /*
  * Copyright (C) 2012 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 10 matching lines @@
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef RTCDataChannel_h
 #define RTCDataChannel_h
 
 #include <memory>
 #include "base/gtest_prod_util.h"
 #include "bindings/core/v8/ActiveScriptWrappable.h"
-#include "core/dom/NotShared.h"
+#include "core/dom/ArrayBufferViewHelpers.h"
 #include "core/dom/SuspendableObject.h"
 #include "modules/EventTargetModules.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/Compiler.h"
 #include "public/platform/WebRTCDataChannelHandler.h"
 #include "public/platform/WebRTCDataChannelHandlerClient.h"
 
 namespace blink {
 
@@ skipping 100 matching lines @@
   unsigned buffered_amount_low_threshold_;
 
   bool stopped_;
 
   FRIEND_TEST_ALL_PREFIXES(RTCDataChannelTest, BufferedAmountLow);
 };
 
 }  // namespace blink
 
 #endif  // RTCDataChannel_h