Commit empty document instead of canceling the load for blocked CSP/XFO responses.

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 123 matching lines @@
             : wasScrolledByUser(false)
             , didRestoreFromHistory(false)
         {
         }
 
         bool wasScrolledByUser;
         bool didRestoreFromHistory;
     };
     InitialScrollState& initialScrollState() { return m_initialScrollState; }
 
+    void setWasBlockedAfterXFrameOptionsOrCSP() { m_wasBlockedAfterXFrameOptionsOrCSP = true; }
+    bool wasBlockedAfterXFrameOptionsOrCSP() { return m_wasBlockedAfterXFrameOptionsOrCSP; }
+
     bool loadingMultipartContent() const;
 
     Resource* startPreload(Resource::Type, FetchRequest&);
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     DocumentLoader(LocalFrame*, const ResourceRequest&, const SubstituteData&);
 
     Vector<KURL> m_redirectChain;
@@ skipping 60 matching lines @@
     DocumentLoadTiming m_documentLoadTiming;
 
     double m_timeOfLastDataReceived;
 
     PersistentWillBeMember<ApplicationCacheHost> m_applicationCacheHost;
 
     RefPtrWillBeMember<ContentSecurityPolicy> m_contentSecurityPolicy;
     ClientHintsPreferences m_clientHintsPreferences;
     InitialScrollState m_initialScrollState;
 
+    bool m_wasBlockedAfterXFrameOptionsOrCSP;
+
     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