A thread-safe Media Query Parser

Source/core/css/MediaFeatureNames.cpp

Index: Source/core/css/MediaFeatureNames.cpp
diff --git a/Source/core/css/MediaFeatureNames.cpp b/Source/core/css/MediaFeatureNames.cpp
index 2db2bd92e9dd1ba6827845187ea12dca859bb509..4434be46e560251b117ad6671478b6af0db375c3 100644
--- a/Source/core/css/MediaFeatureNames.cpp
+++ b/Source/core/css/MediaFeatureNames.cpp
@@ -32,13 +32,13 @@ 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
 }