Simplify starting a same-document navigation

Source/core/loader/DocumentLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google 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.
@@ skipping 102 matching lines @@
         const ResourceError& mainDocumentError() const { return m_mainDocumentError; }
         bool isClientRedirect() const { return m_isClientRedirect; }
         void setIsClientRedirect(bool isClientRedirect) { m_isClientRedirect = isClientRedirect; }
         bool replacesCurrentHistoryItem() const { return m_replacesCurrentHistoryItem; }
         void setReplacesCurrentHistoryItem(bool replacesCurrentHistoryItem) { m_replacesCurrentHistoryItem = replacesCurrentHistoryItem; }
         bool isLoadingInAPISense() const;
         const AtomicString& overrideEncoding() const { return m_overrideEncoding; }
 
         bool scheduleArchiveLoad(Resource*, const ResourceRequest&);
 
-        enum PolicyCheckLoadType {
-            PolicyCheckStandard,
-            PolicyCheckFragment
-        };
-        bool shouldContinueForNavigationPolicy(const ResourceRequest&, PolicyCheckLoadType);
+        bool shouldContinueForNavigationPolicy(const ResourceRequest&);
         const NavigationAction& triggeringAction() const { return m_triggeringAction; }
         void setTriggeringAction(const NavigationAction& action) { m_triggeringAction = action; }
 
         void setOverrideEncoding(const AtomicString& encoding) { m_overrideEncoding = encoding; }
 
         void setDefersLoading(bool);
 
         void startLoadingMainResource();
         void cancelMainResourceLoad(const ResourceError&);
 
@@ skipping 100 matching lines @@
         DocumentLoadTiming m_documentLoadTiming;
 
         double m_timeOfLastDataReceived;
 
         friend class ApplicationCacheHost;  // for substitute resource delivery
         OwnPtr<ApplicationCacheHost> m_applicationCacheHost;
     };
 }
 
 #endif // DocumentLoader_h