[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/modules/webaudio/WaveShaperNode.cpp

 /*
  * Copyright (C) 2011, 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 74 matching lines @@
     exceptionState.throwDOMException(
         InvalidAccessError,
         ExceptionMessages::indexExceedsMinimumBound<unsigned>("curve length",
                                                               curveLength, 2));
     return;
   }
 
   getWaveShaperProcessor()->setCurve(curveData, curveLength);
 }
 
-void WaveShaperNode::setCurve(DOMFloat32Array* curve,
+void WaveShaperNode::setCurve(const MaybeShared<DOMFloat32Array>& maybeShared,
                               ExceptionState& exceptionState) {
   DCHECK(isMainThread());
 
+  if (maybeShared.isShared()) {
+    exceptionState.throwTypeError(
+        "curve should not be backed by a SharedArrayBuffer.");
+    return;
+  }
+  DOMFloat32Array* curve = maybeShared.viewNotShared();
+
   if (curve)
     setCurveImpl(curve->data(), curve->length(), exceptionState);
   else
     setCurveImpl(nullptr, 0, exceptionState);
 }
 
 void WaveShaperNode::setCurve(const Vector<float>& curve,
                               ExceptionState& exceptionState) {
   DCHECK(isMainThread());
 
@@ skipping 43 matching lines @@
       return "2x";
     case WaveShaperProcessor::OverSample4x:
       return "4x";
     default:
       ASSERT_NOT_REACHED();
       return "none";
   }
 }
 
 }  // namespace blink