Expose the initiating origin/URL of a navigation in the Blink public API

third_party/WebKit/Source/web/FrameLoaderClientImpl.h

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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.
@@ skipping 119 matching lines @@
   void didDispatchPingLoader(const KURL&) override;
   void didDisplayContentWithCertificateErrors(const KURL&) override;
   void didRunContentWithCertificateErrors(const KURL&) override;
   void didChangePerformanceTiming() override;
   void didObserveLoadingBehavior(WebLoadingBehaviorFlag) override;
   void selectorMatchChanged(const Vector<String>& addedSelectors,
                             const Vector<String>& removedSelectors) override;
   DocumentLoader* createDocumentLoader(LocalFrame*,
                                        const ResourceRequest&,
                                        const SubstituteData&,
-                                       ClientRedirectPolicy) override;
+                                       ClientRedirectPolicy,
+                                       Document* requestorDocument) override;
   WTF::String userAgent() override;
   WTF::String doNotTrackValue() override;
   void transitionToCommittedForNewPage() override;
   LocalFrame* createFrame(const FrameLoadRequest&,
                           const WTF::AtomicString& name,
                           HTMLFrameOwnerElement*) override;
   virtual bool canCreatePluginWithoutRenderer(const String& mimeType) const;
   Widget* createPlugin(HTMLPlugInElement*,
                        const KURL&,
                        const Vector<WTF::String>&,
@@ skipping 82 matching lines @@
 
 DEFINE_TYPE_CASTS(FrameLoaderClientImpl,
                   FrameLoaderClient,
                   client,
                   client->isFrameLoaderClientImpl(),
                   client.isFrameLoaderClientImpl());
 
 }  // namespace blink
 
 #endif