A thread-safe Media Query Parser

Source/core/css/MediaFeatureNames.cpp

 /*
  * Copyright (C) 2005 Apple Computer, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 
 #ifdef SKIP_STATIC_CONSTRUCTORS_ON_GCC
 #define CSS_MEDIAQUERY_NAMES_HIDE_GLOBALS 1
 #endif
 
 #include "core/css/MediaFeatureNames.h"
 
+#include "core/html/parser/HTMLParserIdioms.h"
 #include "wtf/StaticConstructors.h"
 
 namespace WebCore {
 namespace MediaFeatureNames {
 
 #define DEFINE_MEDIAFEATURE_GLOBAL(name, str) \
-    DEFINE_GLOBAL(AtomicString, name##MediaFeature, str)
+    DEFINE_GLOBAL(String, name##MediaFeature, str)
 CSS_MEDIAQUERY_NAMES_FOR_EACH_MEDIAFEATURE(DEFINE_MEDIAFEATURE_GLOBAL)
 #undef DEFINE_MEDIAFEATURE_GLOBAL
 
 void init()
 {
-#define INITIALIZE_GLOBAL(name, str) new (NotNull, (void*)&name##MediaFeature) AtomicString(str, AtomicString::ConstructFromLiteral);
+#define INITIALIZE_GLOBAL(name, str) new (NotNull, (void*)&name##MediaFeature) String(StringImpl::createStatic((char*)str, strlen(str), StringHasher::computeHashAndMaskTop8Bits((LChar*)str, strlen(str))));
     CSS_MEDIAQUERY_NAMES_FOR_EACH_MEDIAFEATURE(INITIALIZE_GLOBAL)
 #undef INITIALIZE_GLOBAL
 }
 
 } // namespace MediaFeatureNames
 } // namespace WebCore