Test to see if we can bring in document data from Blink.

third_party/WebKit/public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 266 matching lines @@
 
     // A form submission has been requested, but the page's submit event handler
     // hasn't yet had a chance to run (and possibly alter/interrupt the submit.)
     virtual void willSendSubmitEvent(const WebFormElement&) { }
 
     // A form submission is about to occur.
     virtual void willSubmitForm(const WebFormElement&) { }
 
     // A datasource has been created for a new navigation.  The given
     // datasource will become the provisional datasource for the frame.
-    virtual void didCreateDataSource(WebLocalFrame*, WebDataSource*) { }
+    // enum class Initiator { InitialEmptyDocument = 0, ContentInitiated = 1, NonContentInitiated = 2 };
+    virtual void didCreateDataSource(WebLocalFrame*, WebDataSource*, int initiator) { }
 
     // A new provisional load has been started.
     virtual void didStartProvisionalLoad(WebLocalFrame* localFrame, double triggeringEventTime) { }
 
     // The provisional load was redirected via a HTTP 3xx response.
     virtual void didReceiveServerRedirectForProvisionalLoad(WebLocalFrame*) { }
 
     // The provisional load failed. The WebHistoryCommitType is the commit type
     // that would have been used had the load succeeded.
     virtual void didFailProvisionalLoad(WebLocalFrame*, const WebURLError&, WebHistoryCommitType) { }
@@ skipping 413 matching lines @@
     // Mojo ----------------------------------------------------------------
     virtual ServiceRegistry* serviceRegistry() { return nullptr; }
 
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif