[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/modules/presentation/PresentationConnection.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.
 
 #include "modules/presentation/PresentationConnection.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/Document.h"
@@ skipping 262 matching lines @@
 void PresentationConnection::send(DOMArrayBuffer* arrayBuffer,
                                   ExceptionState& exceptionState) {
   ASSERT(arrayBuffer && arrayBuffer->buffer());
   if (!canSendMessage(exceptionState))
     return;
 
   m_messages.push_back(new Message(arrayBuffer));
   handleMessageQueue();
 }
 
-void PresentationConnection::send(DOMArrayBufferView* arrayBufferView,
-                                  ExceptionState& exceptionState) {
-  ASSERT(arrayBufferView);
+void PresentationConnection::send(
+    const NotShared<DOMArrayBufferView>& arrayBufferView,
+    ExceptionState& exceptionState) {
+  DCHECK(arrayBufferView.view());
   if (!canSendMessage(exceptionState))
     return;
 
-  m_messages.push_back(new Message(arrayBufferView->buffer()));
+  m_messages.push_back(new Message(arrayBufferView.view()->buffer()));
   handleMessageQueue();
 }
 
 void PresentationConnection::send(Blob* data, ExceptionState& exceptionState) {
   ASSERT(data);
   if (!canSendMessage(exceptionState))
     return;
 
   m_messages.push_back(new Message(data->blobDataHandle()));
   handleMessageQueue();
@@ skipping 216 matching lines @@
 void PresentationConnection::tearDown() {
   // Cancel current Blob loading if any.
   if (m_blobLoader) {
     m_blobLoader->cancel();
     m_blobLoader.clear();
   }
   m_messages.clear();
 }
 
 }  // namespace blink