Revert of Simplify starting a navigation

third_party/WebKit/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 156 matching lines @@
 
     void commitIfReady();
     void commitData(const char* bytes, size_t length);
     ResourceLoader* mainResourceLoader() const;
     void clearMainResourceHandle();
 
     bool maybeCreateArchive();
 
     void prepareSubframeArchiveLoadIfNeeded();
 
+    void willSendRequest(ResourceRequest&, const ResourceResponse&);
     void finishedLoading(double finishTime);
     void mainReceivedError(const ResourceError&);
     void cancelLoadAfterXFrameOptionsOrCSPDenied(const ResourceResponse&);
     void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) final;
+    void updateRequest(Resource*, const ResourceRequest&) final;
     void responseReceived(Resource*, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) final;
     void dataReceived(Resource*, const char* data, unsigned length) final;
     void processData(const char* data, unsigned length);
     void notifyFinished(Resource*) final;
 
     bool maybeLoadEmpty();
 
     bool isRedirectAfterPost(const ResourceRequest&, const ResourceResponse&);
 
     bool shouldContinueForResponse() const;
@@ skipping 32 matching lines @@
 
     double m_timeOfLastDataReceived;
 
     PersistentWillBeMember<ApplicationCacheHost> m_applicationCacheHost;
 
     RefPtrWillBeMember<ContentSecurityPolicy> m_contentSecurityPolicy;
     ClientHintsPreferences m_clientHintsPreferences;
     InitialScrollState m_initialScrollState;
 
     enum State {
+        NotStarted,
         Provisional,
         Committed,
         DataReceived,
         MainResourceDone,
         SentDidFinishLoad
     };
     State m_state;
 
     // Used to protect against reentrancy into dataReceived().
     bool m_inDataReceived;
     RefPtr<SharedBuffer> m_dataBuffer;
 };
 
 DECLARE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 } // namespace blink
 
 #endif // DocumentLoader_h