[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 264 matching lines @@
 void PresentationConnection::send(DOMArrayBuffer* array_buffer,
                                   ExceptionState& exception_state) {
   ASSERT(array_buffer && array_buffer->Buffer());
   if (!CanSendMessage(exception_state))
     return;
 
   messages_.push_back(new Message(array_buffer));
   HandleMessageQueue();
 }
 
-void PresentationConnection::send(DOMArrayBufferView* array_buffer_view,
-                                  ExceptionState& exception_state) {
-  ASSERT(array_buffer_view);
+void PresentationConnection::send(
+    NotShared<DOMArrayBufferView> array_buffer_view,
+    ExceptionState& exception_state) {
+  DCHECK(array_buffer_view);
   if (!CanSendMessage(exception_state))
     return;
 
-  messages_.push_back(new Message(array_buffer_view->buffer()));
+  messages_.push_back(new Message(array_buffer_view.View()->buffer()));
   HandleMessageQueue();
 }
 
 void PresentationConnection::send(Blob* data, ExceptionState& exception_state) {
   ASSERT(data);
   if (!CanSendMessage(exception_state))
     return;
 
   messages_.push_back(new Message(data->GetBlobDataHandle()));
   HandleMessageQueue();
@@ skipping 215 matching lines @@
 void PresentationConnection::TearDown() {
   // Cancel current Blob loading if any.
   if (blob_loader_) {
     blob_loader_->Cancel();
     blob_loader_.Clear();
   }
   messages_.Clear();
 }
 
 }  // namespace blink