chromeos: Add missing OVERRIDE annotation to classes implementing TabContentsDelegate::IsPopup

chrome/browser/chromeos/login/web_page_screen.cc

Index: chrome/browser/chromeos/login/web_page_screen.cc
diff --git a/chrome/browser/chromeos/login/web_page_screen.cc b/chrome/browser/chromeos/login/web_page_screen.cc
index fd35711f1ad8c2b71de29cf1d7e8cb6a3fdef2f1..86e3a11c56a7e51ced506add19b84da04a688103 100644
--- a/chrome/browser/chromeos/login/web_page_screen.cc
+++ b/chrome/browser/chromeos/login/web_page_screen.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -24,10 +24,6 @@ WebPageScreen::~WebPageScreen() {}
 ///////////////////////////////////////////////////////////////////////////////
 // WebPageScreen, TabContentsDelegate implementation:
 
-bool WebPageScreen::IsPopup(TabContents* source) {
-  return false;
-}
-
 bool WebPageScreen::ShouldAddNavigationToHistory(
     const history::HistoryAddPageArgs& add_page_args,
     content::NavigationType navigation_type) {