Use the correct case converter for |localName| and |tagName|

third_party/WebKit/Source/wtf/text/AtomicString.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2013 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 69 matching lines @@
 AtomicString AtomicString::lowerASCII() const {
   StringImpl* impl = this->impl();
   if (UNLIKELY(!impl))
     return *this;
   RefPtr<StringImpl> newImpl = impl->lowerASCII();
   if (LIKELY(newImpl == impl))
     return *this;
   return AtomicString(newImpl.release());
 }
 
+AtomicString AtomicString::upperASCII() const {
+  StringImpl* impl = this->impl();
+  if (UNLIKELY(!impl))
+    return *this;
+  return AtomicString(impl->upperASCII());
+}
+
 template <typename IntegerType>
 static AtomicString integerToAtomicString(IntegerType input) {
   IntegerToStringConverter<IntegerType> converter(input);
   return AtomicString(converter.characters8(), converter.length());
 }
 
 AtomicString AtomicString::number(int number) {
   return integerToAtomicString(number);
 }
 
@@ skipping 26 matching lines @@
   return out << s.getString();
 }
 
 #ifndef NDEBUG
 void AtomicString::show() const {
   m_string.show();
 }
 #endif
 
 }  // namespace WTF