Plumb the referrer throughout the OpenURL APIs....

chrome/browser/views/tabs/dragged_tab_controller.cc

 // 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.
 
 #include <math.h>
 
 #include "chrome/browser/views/tabs/dragged_tab_controller.h"
 
 #include "chrome/browser/browser_window.h"
 #include "chrome/browser/frame_util.h"
@@ skipping 125 matching lines @@
 
 bool DraggedTabController::IsDragSourceTab(Tab* tab) const {
   return source_tab_ == tab;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // DraggedTabController, PageNavigator implementation:
 
 void DraggedTabController::OpenURLFromTab(TabContents* source,
                                           const GURL& url,
+                                          const GURL& referrer,
                                           WindowOpenDisposition disposition,
                                           PageTransition::Type transition) {
   if (original_delegate_) {
     if (disposition == CURRENT_TAB)
       disposition = NEW_WINDOW;
 
-    original_delegate_->OpenURLFromTab(source, url, disposition, transition);
+    original_delegate_->OpenURLFromTab(source, url, referrer,
+                                       disposition, transition);
   }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // DraggedTabController, TabContentsDelegate implementation:
 
 void DraggedTabController::NavigationStateChanged(const TabContents* source,
                                                   unsigned changed_flags) {
   if (view_.get())
     view_->Update();
@@ skipping 619 matching lines @@
     Tab* tab = GetTabMatchingDraggedContents(attached_tabstrip_);
     if (tab)
       tab->SetVisible(true);
   }
   CleanUpHiddenFrame();
 
   if (!in_destructor_)
     source_tabstrip_->DestroyDragController();
 }