Reland "Correctly set ScriptState in the image loader microtask"

Source/core/loader/FrameLoaderTypes.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 46 matching lines @@
     ObjectContentFrame,
     ObjectContentNetscapePlugin,
     ObjectContentOtherPlugin
 };
 
 enum ShouldSendReferrer {
     MaybeSendReferrer,
     NeverSendReferrer
 };
 
+enum CreateWindowReason {
+    CreatedFromWindowOpen,
+    CreatedFromLoadRequest
+};
+
 enum ReasonForCallingAllowPlugins {
     AboutToInstantiatePlugin,
     NotAboutToInstantiatePlugin
 };
 
 enum LoadStartType {
     NavigationToDifferentDocument,
     NavigationWithinSameDocument
 };
 
@@ skipping 15 matching lines @@
 };
 
 enum HistoryScrollRestorationType {
     ScrollRestorationAuto,
     ScrollRestorationManual
 };
 
 }
 
 #endif