Rename ExceptionCode constants to use the names in the spec (2/3)

Source/core/css/PropertySetCSSStyleDeclaration.cpp

Index: Source/core/css/PropertySetCSSStyleDeclaration.cpp
diff --git a/Source/core/css/PropertySetCSSStyleDeclaration.cpp b/Source/core/css/PropertySetCSSStyleDeclaration.cpp
index e941ceca7bab3a29e94268c9ebb221ec82ccfac2..5946bda721f0373c12bd563b0b39b491b974e5ea 100644
--- a/Source/core/css/PropertySetCSSStyleDeclaration.cpp
+++ b/Source/core/css/PropertySetCSSStyleDeclaration.cpp
@@ -230,7 +230,7 @@ void PropertySetCSSStyleDeclaration::setProperty(const String& propertyName, con
     didMutate(changed ? PropertyChanged : NoChanges);
 
     if (changed) {
-        // CSS DOM requires raising SYNTAX_ERR of parsing failed, but this is too dangerous for compatibility,
+        // CSS DOM requires raising SyntaxError of parsing failed, but this is too dangerous for compatibility,
         // see <http://bugs.webkit.org/show_bug.cgi?id=7296>.
         mutationScope.enqueueMutationRecord();
     }