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

chrome/browser/chromeos/login/web_page_screen.cc

-// 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.
 
 #include "chrome/browser/chromeos/login/web_page_screen.h"
 
 #include "base/time.h"
 
 using base::TimeDelta;
 
 namespace chromeos {
 
 namespace {
 
 // Time in seconds after page load is considered timed out.
 const int kNetworkTimeoutSec = 10;
 
 }  // namespace
 
 WebPageScreen::WebPageScreen() {}
 
 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) {
   return false;
 }
 
 bool WebPageScreen::HandleContextMenu(const ContextMenuParams& params) {
   // Just return true because we don't want to show context menue.
   return true;
 }
@@ skipping 14 matching lines @@
                        this,
                        &WebPageScreen::OnNetworkTimeout);
 }
 
 void WebPageScreen::StopTimeoutTimer() {
   if (timeout_timer_.IsRunning())
     timeout_timer_.Stop();
 }
 
 }  // namespace chromeos