Plumb initiator out of 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 267 matching lines @@
   virtual void loadErrorPage(int reason) {}
 
   // Navigational queries ------------------------------------------------
 
   // The client may choose to alter the navigation policy.  Otherwise,
   // defaultPolicy should just be returned.
 
   struct NavigationPolicyInfo {
     WebDataSource::ExtraData* extraData;
 
+    WebLocalFrame* initiatorFrame;
     // Note: if browser side navigations are enabled, the client may modify
     // the urlRequest. However, should this happen, the client should change
     // the WebNavigationPolicy to WebNavigationPolicyIgnore, and the load
     // should stop in blink. In all other cases, the urlRequest should not
     // be modified.
     WebURLRequest& urlRequest;
     WebNavigationType navigationType;
     WebNavigationPolicy defaultPolicy;
     bool replacesCurrentHistoryItem;
     bool isHistoryNavigationInNewChildFrame;
@@ skipping 44 matching lines @@
   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*) {}
 
   // A new provisional load has been started.
-  virtual void didStartProvisionalLoad(WebDataSource* dataSource,
+  virtual void didStartProvisionalLoad(WebLocalFrame* initiatorFrame,
+                                       WebDataSource* dataSource,
                                        WebURLRequest& request) {}
 
   // 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 396 matching lines @@
   // Overwrites the given URL to use an HTML5 embed if possible.
   // An empty URL is returned if the URL is not overriden.
   virtual WebURL overrideFlashEmbedWithHTML(const WebURL& url) {
     return WebURL();
   }
 };
 
 }  // namespace blink
 
 #endif