[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..bec34ca3efe38c39e6817313fff08a44c3610f7d 100644
--- a/third_party/WebKit/Source/modules/crypto/Crypto.cpp
+++ b/third_party/WebKit/Source/modules/crypto/Crypto.cpp
@@ -50,27 +50,29 @@ bool isIntegerArray(DOMArrayBufferView* array) {
 
 }  // namespace
 
-DOMArrayBufferView* Crypto::getRandomValues(DOMArrayBufferView* array,
-                                            ExceptionState& exceptionState) {
-  ASSERT(array);
-  if (!isIntegerArray(array)) {
+NotShared<DOMArrayBufferView> Crypto::getRandomValues(
+    NotShared<DOMArrayBufferView> array,
+    ExceptionState& exceptionState) {
+  DCHECK(array);
+  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()));
-    return nullptr;
+                       array.view()->typeName()));
+    return NotShared<DOMArrayBufferView>(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()));
-    return nullptr;
+                       array.view()->byteLength()));
+    return NotShared<DOMArrayBufferView>(nullptr);
   }
-  cryptographicallyRandomValues(array->baseAddress(), array->byteLength());
+  cryptographicallyRandomValues(array.view()->baseAddress(),
+                                array.view()->byteLength());
   return array;
 }