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

Source/modules/notifications/NotificationCenter.h

Index: Source/modules/notifications/NotificationCenter.h
diff --git a/Source/modules/notifications/NotificationCenter.h b/Source/modules/notifications/NotificationCenter.h
index 8ec001262b868ca5a0ff90b7accd85d2a0b4fa7d..98d8b118ecd337c0ef4cefc95638b61f6e3da68d 100644
--- a/Source/modules/notifications/NotificationCenter.h
+++ b/Source/modules/notifications/NotificationCenter.h
@@ -58,11 +58,11 @@ public:
     PassRefPtr<Notification> createHTMLNotification(const String& URI, ExceptionCode& ec)
     {
         if (!client()) {
-            ec = INVALID_STATE_ERR;
+            ec = InvalidStateError;
             return 0;
         }
         if (URI.isEmpty()) {
-            ec = SYNTAX_ERR;
+            ec = SyntaxError;
             return 0;
         }
         return Notification::create(scriptExecutionContext()->completeURL(URI), scriptExecutionContext(), ec, this);
@@ -73,7 +73,7 @@ public:
     PassRefPtr<Notification> createNotification(const String& iconURI, const String& title, const String& body, ExceptionCode& ec)
     {
         if (!client()) {
-            ec = INVALID_STATE_ERR;
+            ec = InvalidStateError;
             return 0;
         }
         return Notification::create(title, body, iconURI, scriptExecutionContext(), ec, this);