Replaced RefPtr::release with std::move in Source/wtf.

third_party/WebKit/Source/wtf/text/StringBuffer.h

 /*
  * Copyright (C) 2008, 2010 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 46 matching lines @@
   CharType* characters() {
     return length() ? const_cast<CharType*>(m_data->getCharacters<CharType>())
                     : 0;
   }
 
   CharType& operator[](unsigned i) {
     SECURITY_DCHECK(i < length());
     return characters()[i];
   }
 
-  PassRefPtr<StringImpl> release() { return m_data.release(); }
+  PassRefPtr<StringImpl> release() { return std::move(m_data); }
 
  private:
   RefPtr<StringImpl> m_data;
 };
 
 template <typename CharType>
 void StringBuffer<CharType>::shrink(unsigned newLength) {
   DCHECK(m_data);
   if (m_data->length() == newLength)
     return;
   m_data = m_data->substring(0, newLength);
 }
 
 }  // namespace WTF
 
 using WTF::StringBuffer;
 
 #endif  // StringBuffer_h