[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

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

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 437 matching lines @@
     //      JsonWebKey dictionary, throw a TypeError.
     //
     //  (2) Let keyData be the result of getting a copy of the bytes held by
     //      the keyData parameter passed to the importKey method.
     case WebCryptoKeyFormatRaw:
     case WebCryptoKeyFormatPkcs8:
     case WebCryptoKeyFormatSpki:
       if (rawKeyData.isArrayBuffer()) {
         keyData = copyBytes(rawKeyData.getAsArrayBuffer());
       } else if (rawKeyData.isArrayBufferView()) {
-        keyData = copyBytes(rawKeyData.getAsArrayBufferView());
+        keyData = copyBytes(rawKeyData.getAsArrayBufferView().view());
       } else {
         result->completeWithError(
             WebCryptoErrorTypeType,
             "Key data must be a BufferSource for non-JWK formats");
         return promise;
       }
       break;
     // 14.3.9.2: If format is equal to the string "jwk":
     //
     //  (1) If the keyData parameter passed to the importKey method is not a
@@ skipping 303 matching lines @@
                            normalizedAlgorithm, baseKey->key());
   histogramAlgorithm(scriptState->getExecutionContext(),
                      normalizedDerivedKeyAlgorithm);
   Platform::current()->crypto()->deriveKey(
       normalizedAlgorithm, baseKey->key(), normalizedDerivedKeyAlgorithm,
       keyLengthAlgorithm, extractable, keyUsages, result->result());
   return promise;
 }
 
 }  // namespace blink