Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/modules/encoding/TextEncoder.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 55 matching lines @@
 {
 }
 
 String TextEncoder::encoding() const
 {
     String name = String(m_encoding.name()).lower();
     ASSERT(name == "utf-8" || name == "utf-16le" || name == "utf-16be");
     return name;
 }
 
-PassRefPtr<DOMUint8Array> TextEncoder::encode(const String& input)
+PassRefPtr<DOMUint8Array> TextEncoder::encode(const String& input, ExceptionState& exceptionState)
 {
     CString result;
     if (input.is8Bit())
         result = m_codec->encode(input.characters8(), input.length(), WTF::QuestionMarksForUnencodables);
     else
         result = m_codec->encode(input.characters16(), input.length(), WTF::QuestionMarksForUnencodables);
 
     const char* buffer = result.data();
     const unsigned char* unsignedBuffer = reinterpret_cast<const unsigned char*>(buffer);
 
-    return DOMUint8Array::create(unsignedBuffer, result.length());
+    // TODO(junov): crbug.com/536816
+    // We should probably use createOrNull here and throw a RangeError exception
+    // when the buffer allocation fails.  The rationale for this is that the ECMAScript
+    // specification states that a RangeError exception should be thrown:
+    // http://ecma-international.org/ecma-262/6.0/#sec-createbytedatablock
+    // However, the spec for TextEncoder.encode does not state that exceptions
+    // thrown by procedures referenced by the algorithm should be rethrown. It
+    // probably should.
+    return DOMUint8Array::deprecatedCreateOrCrash(unsignedBuffer, result.length());
 }
 
 } // namespace blink