Plumb the referrer throughout the OpenURL APIs....

chrome/renderer/render_view.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_RENDERER_RENDER_VIEW_H_
 #define CHROME_RENDERER_RENDER_VIEW_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 188 matching lines @@
   virtual WebView* CreateWebView(WebView* webview, bool user_gesture);
   virtual WebWidget* CreatePopupWidget(WebView* webview);
   virtual WebPluginDelegate* CreatePluginDelegate(
       WebView* webview,
       const GURL& url,
       const std::string& mime_type,
       const std::string& clsid,
       std::string* actual_mime_type);
   virtual void OnMissingPluginStatus(WebPluginDelegate* delegate, int status);
   virtual void OpenURL(WebView* webview, const GURL& url,
+                       const GURL& referrer,
                        WindowOpenDisposition disposition);
   virtual void DidDownloadImage(int id,
                                 const GURL& image_url,
                                 bool errored,
                                 const SkBitmap& image);
   virtual GURL GetAlternateErrorPageURL(const GURL& failedURL,
                                         ErrorPageType error_type);
 
   virtual void ShowContextMenu(WebView* webview,
                                ContextNode::Type type,
@@ skipping 447 matching lines @@
   // to wait for an ACK from the browser before proceeding.
   std::queue<IPC::Message*> queued_resource_messages_;
 
   // Set if we are waiting for an ack for ViewHostMsg_CreateWindow
   bool waiting_for_create_window_ack_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };
 
 #endif  // CHROME_RENDERER_RENDER_VIEW_H_