PlzNavigate: don't stop all loaders when renderer-initiated nav fails

third_party/WebKit/Source/core/loader/FrameLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2009. 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:
@@ skipping 204 matching lines @@
 
   // Note: When a PlzNavigtate navigation is handled by the client, we will
   // have created a dummy provisional DocumentLoader, so this will return true
   // while the client handles the navigation.
   bool hasProvisionalNavigation() const { return provisionalDocumentLoader(); }
 
   DECLARE_TRACE();
 
   static void setReferrerForFrameRequest(FrameLoadRequest&);
 
+  void clientDroppedNavigation();
+
  private:
   void checkTimerFired(TimerBase*);
 
   bool prepareRequestForThisFrame(FrameLoadRequest&);
   FrameLoadType determineFrameLoadType(const FrameLoadRequest&);
 
   SubstituteData defaultSubstituteDataForURL(const KURL&);
 
   bool shouldPerformFragmentNavigation(bool isFormSubmission,
                                        const String& httpMethod,
@@ skipping 92 matching lines @@
 
   SandboxFlags m_forcedSandboxFlags;
 
   bool m_dispatchingDidClearWindowObjectInMainWorld;
   bool m_protectProvisionalLoader;
 };
 
 }  // namespace blink
 
 #endif  // FrameLoader_h