Plumb the referrer throughout the OpenURL APIs....

chrome/browser/tabs/tab_strip_model.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_TABS_TAB_STRIP_MODEL_H__
 #define CHROME_BROWSER_TABS_TAB_STRIP_MODEL_H__
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 100 matching lines @@
   // Determine what drag actions are possible for the specified strip.
   virtual int GetDragActions() const = 0;
 
   // Creates an appropriate TabContents for the given URL. This is handled by
   // the delegate since the TabContents may require special circumstances to
   // exist for it to be constructed (e.g. a parent HWND).
   // If |defer_load| is true, the navigation controller doesn't load the url.
   // If |instance| is not null, its process is used to render the tab.
   virtual TabContents* CreateTabContentsForURL(
       const GURL& url,
+      const GURL& referrer,
       Profile* profile,
       PageTransition::Type transition,
       bool defer_load,
       SiteInstance* instance) const = 0;
 
   // Show the web application context menu at the provided point. |p| is in
   // screen coordinate system.
   virtual void ShowApplicationMenu(const gfx::Point& p) = 0;
 
   // Return whether some contents can be duplicated.
@@ skipping 399 matching lines @@
 
   // Our observers.
   typedef ObserverList<TabStripModelObserver> TabStripModelObservers;
   TabStripModelObservers observers_;
 
   DISALLOW_EVIL_CONSTRUCTORS(TabStripModel);
 };
 
 #endif  // CHROME_BROWSER_TABS_TAB_STRIP_MODEL_H__