Plumb the referrer throughout the OpenURL APIs....

chrome/browser/views/about_chrome_view.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 "chrome/browser/views/about_chrome_view.h"
 
 #include <commdlg.h>
 
 #include "base/file_version_info.h"
 #include "base/string_util.h"
@@ skipping 577 matching lines @@
   if (source == terms_of_service_url_)
     url = GURL(kTOS);
   else if (source == chromium_url_)
     url = GURL(kChromiumUrl);
   else if (source == open_source_url_)
     url = GURL(kAcknowledgements);
   else
     NOTREACHED() << "Unknown link source";
 
   Browser* browser = BrowserList::GetLastActive();
-  browser->OpenURL(url, NEW_WINDOW, PageTransition::LINK);
+  browser->OpenURL(url, GURL(), NEW_WINDOW, PageTransition::LINK);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // AboutChromeView, GoogleUpdateStatusListener implementation:
 
 void AboutChromeView::OnReportResults(GoogleUpdateUpgradeResult result,
                                       GoogleUpdateErrorCode error_code,
                                       const std::wstring& version) {
   // Drop the last reference to the object so that it gets cleaned up here.
   google_updater_ = NULL;
@@ skipping 97 matching lines @@
 
   // We have updated controls on the parent, so we need to update its layout.
   View* parent = GetParent();
   parent->Layout();
 
   // Check button may have appeared/disappeared. We cannot call this during
   // ViewHierarchyChanged because the |window()| pointer hasn't been set yet.
   if (window())
     GetDialogClientView()->UpdateDialogButtons();
 }