Plumb the referrer throughout the OpenURL APIs....

chrome/browser/constrained_window.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_CONSTRAINED_WINDOW_H__
 #define CHROME_BROWSER_CONSTRAINED_WINDOW_H__
 
 #include "chrome/common/page_transition_types.h"
 #include "webkit/glue/window_open_disposition.h"
 
@@ skipping 23 matching lines @@
   // lets the delegate decide what to do.
   virtual void AddNewContents(ConstrainedWindow* window,
                               TabContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture) = 0;
 
   // Called to open a URL in a the specified manner.
   virtual void OpenURL(ConstrainedWindow* window,
                        const GURL& url,
+                       const GURL& referrer,
                        WindowOpenDisposition disposition,
                        PageTransition::Type transition) = 0;
 
   // Called when the window is about to be closed.
   virtual void WillClose(ConstrainedWindow* window) = 0;
 
   // Called when the window's contents should be detached into a top-level
   // window.  The delegate is expected to have re-parented the TabContents by
   // the time this method returns.
   // |contents_bounds| is the bounds of the TabContents after the detach
@@ skipping 75 matching lines @@
   virtual void UpdateWindowTitle() = 0;
 
   // Returns the current display rectangle (relative to its
   // parent). This method is only called from the unit tests to check
   // the location/size of a constrained window.
   virtual const gfx::Rect& GetCurrentBounds() const = 0;
 };
 
 #endif  // #ifndef CHROME_BROWSER_CONSTRAINED_WINDOW_H__