[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/modules/beacon/NavigatorBeacon.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/beacon/NavigatorBeacon.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/modules/v8/ArrayBufferViewOrBlobOrStringOrFormData.h"
 #include "core/dom/DOMArrayBufferView.h"
@@ skipping 98 matching lines @@
   ExecutionContext* context = scriptState->getExecutionContext();
   KURL url = context->completeURL(urlstring);
   if (!canSendBeacon(context, url, exceptionState))
     return false;
 
   int allowance = maxAllowance();
   size_t beaconSize = 0;
   bool allowed;
 
   if (data.isArrayBufferView()) {
-    allowed = PingLoader::sendBeacon(supplementable()->frame(), allowance, url,
-                                     data.getAsArrayBufferView(), beaconSize);
+    allowed =
+        PingLoader::sendBeacon(supplementable()->frame(), allowance, url,
+                               data.getAsArrayBufferView().view(), beaconSize);
   } else if (data.isBlob()) {
     Blob* blob = data.getAsBlob();
     if (!FetchUtils::isSimpleContentType(AtomicString(blob->type()))) {
       UseCounter::count(context,
                         UseCounter::SendBeaconWithNonSimpleContentType);
       if (RuntimeEnabledFeatures::
               sendBeaconThrowForBlobWithNonSimpleTypeEnabled()) {
         exceptionState.throwSecurityError(
             "sendBeacon() with a Blob whose type is not CORS-safelisted MIME "
             "type is disallowed experimentally. See http://crbug.com/490015 "
@@ skipping 19 matching lines @@
     return false;
   }
 
   // Only accumulate transmission size if a limit is imposed.
   if (allowance >= 0)
     addTransmittedBytes(beaconSize);
   return true;
 }
 
 }  // namespace blink