Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/modules/crypto/NormalizeAlgorithm.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 310 matching lines @@
 // Defined by the WebCrypto spec as:
 //
 //     typedef Uint8Array BigInteger;
 bool getBigInteger(const Dictionary& raw, const char* propertyName, RefPtr<DOMUint8Array>& array, const ErrorContext& context, AlgorithmError* error)
 {
     if (!getUint8Array(raw, propertyName, array, context, error))
         return false;
 
     if (!array->byteLength()) {
         // Empty BigIntegers represent 0 according to the spec
-        array = DOMUint8Array::create(1);
+        array = DOMUint8Array::deprecatedCreateOrCrash(0, 0);

[haraken, 2015/10/29 18:58:37]

Shouldn't this be deprecatedCreateOrCrash(nullptr, 1)?

[Justin Novosad, 2015/11/05 00:17:52]

Done.

     }
 
     return true;
 }
 
 // Gets an integer according to WebIDL's [EnforceRange].
 bool getOptionalInteger(const Dictionary& raw, const char* propertyName, bool& hasProperty, double& value, double minValue, double maxValue, const ErrorContext& context, AlgorithmError* error)
 {
     double number;
     bool ok = DictionaryHelper::get(raw, propertyName, number, hasProperty);
@@ skipping 636 matching lines @@
 }
 
 } // namespace
 
 bool normalizeAlgorithm(const AlgorithmIdentifier& raw, WebCryptoOperation op, WebCryptoAlgorithm& algorithm, AlgorithmError* error)
 {
     return parseAlgorithmIdentifier(raw, op, algorithm, ErrorContext(), error);
 }
 
 } // namespace blink