[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/modules/crypto/Crypto.cpp

Index: third_party/WebKit/Source/modules/crypto/Crypto.cpp
diff --git a/third_party/WebKit/Source/modules/crypto/Crypto.cpp b/third_party/WebKit/Source/modules/crypto/Crypto.cpp
index 96506e4cbf0cb348a792b610801ac025c14969de..58f804537fd2c4d2d9a91b67c1d8ac8759ffa617 100644
--- a/third_party/WebKit/Source/modules/crypto/Crypto.cpp
+++ b/third_party/WebKit/Source/modules/crypto/Crypto.cpp
@@ -50,28 +50,30 @@ bool isIntegerArray(DOMArrayBufferView* array) {
 
 }  // namespace
 
-DOMArrayBufferView* Crypto::getRandomValues(DOMArrayBufferView* array,
-                                            ExceptionState& exceptionState) {
-  ASSERT(array);
-  if (!isIntegerArray(array)) {
+DOMArrayBufferView* Crypto::getRandomValues(
+    const NotShared<DOMArrayBufferView>& array,
+    ExceptionState& exceptionState) {
+  DCHECK(array.view());
+  if (!isIntegerArray(array.view())) {
     exceptionState.throwDOMException(
         TypeMismatchError,
         String::format("The provided ArrayBufferView is of type '%s', which is "
                        "not an integer array type.",
-                       array->typeName()));
+                       array.view()->typeName()));
     return nullptr;
   }
-  if (array->byteLength() > 65536) {
+  if (array.view()->byteLength() > 65536) {
     exceptionState.throwDOMException(
         QuotaExceededError,
         String::format("The ArrayBufferView's byte length (%u) exceeds the "
                        "number of bytes of entropy available via this API "
                        "(65536).",
-                       array->byteLength()));
+                       array.view()->byteLength()));
     return nullptr;
   }
-  cryptographicallyRandomValues(array->baseAddress(), array->byteLength());
-  return array;
+  cryptographicallyRandomValues(array.view()->baseAddress(),
+                                array.view()->byteLength());
+  return array.view();
 }
 
 SubtleCrypto* Crypto::subtle() {