Replace the GURL referrer field of OpenURLParams with a content::Referrer

content/browser/tab_contents/tab_contents_observer.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_OBSERVER_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_OBSERVER_H_
 
 #include "base/process_util.h"
 #include "content/browser/tab_contents/navigation_controller.h"
 #include "content/common/content_export.h"
 #include "content/public/common/page_transition_types.h"
 #include "ipc/ipc_channel.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class RenderViewHost;
 
 namespace content {
 struct FrameNavigateParams;
+struct Referrer;
 }
 
 // An observer API implemented by classes which are interested in various page
 // load events from TabContents.  They also get a chance to filter IPC messages.
 class CONTENT_EXPORT TabContentsObserver : public IPC::Channel::Listener,
                                            public IPC::Message::Sender {
  public:
   virtual void RenderViewCreated(RenderViewHost* render_view_host);
   virtual void RenderViewDeleted(RenderViewHost* render_view_host);
   virtual void RenderViewReady();
@@ skipping 39 matching lines @@
                            const string16& error_description);
   virtual void DidGetUserGesture();
   virtual void DidGetIgnoredUIEvent();
   virtual void DidBecomeSelected();
 
   virtual void DidStartLoading();
   virtual void DidStopLoading();
   virtual void StopNavigation();
 
   virtual void DidOpenURL(const GURL& url,
-                          const GURL& referrer,
+                          const content::Referrer& referrer,
                           WindowOpenDisposition disposition,
                           content::PageTransition transition);
 
   virtual void DidOpenRequestedURL(TabContents* new_contents,
                                    const GURL& url,
-                                   const GURL& referrer,
+                                   const content::Referrer& referrer,
                                    WindowOpenDisposition disposition,
                                    content::PageTransition transition,
                                    int64 source_frame_id);
 
   virtual void AppCacheAccessed(const GURL& manifest_url,
                                 bool blocked_by_policy);
 #if 0
   // For unifying with delegate...
 
   // Notifies the delegate that this contents is starting or is done loading
@@ skipping 43 matching lines @@
   // Invoked from TabContents. Invokes TabContentsDestroyed and NULL out
   // |tab_contents_|.
   void TabContentsDestroyed();
 
   TabContents* tab_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsObserver);
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_OBSERVER_H_