Plumb the referrer throughout the OpenURL APIs....

chrome/browser/external_tab_container.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_EXTERNAL_TAB_CONTAINER_H_
 #define CHROME_BROWSER_EXTERNAL_TAB_CONTAINER_H_
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlcrack.h>
@@ skipping 37 matching lines @@
   ~ExternalTabContainer();
 
   TabContents* tab_contents() const {
     return tab_contents_;
   }
 
   bool Init(Profile* profile);
   // Overridden from TabContentsDelegate:
   virtual void OpenURLFromTab(TabContents* source,
                               const GURL& url,
+                              const GURL& referrer,
                               WindowOpenDisposition disposition,
                               PageTransition::Type transition);
   virtual void NavigationStateChanged(const TabContents* source,
                                       unsigned changed_flags);
   virtual void ReplaceContents(TabContents* source, TabContents* new_contents);
   virtual void AddNewContents(TabContents* source,
                               TabContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture);
@@ skipping 72 matching lines @@
   HACCEL external_accel_table_;
   unsigned int external_accel_entry_count_;
   // A view to handle focus cycling
   TabContentsContainerView* tab_contents_container_;
  private:
   DISALLOW_COPY_AND_ASSIGN(ExternalTabContainer);
 };
 
 #endif  // CHROME_BROWSER_EXTERNAL_TAB_CONTAINER_H__