Remove obsolete chromeos specific code

chrome/browser/ui/panels/panel.cc

 // Copyright (c) 2012 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/ui/panels/panel.h"
 
 #include "base/logging.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 433 matching lines @@
 }
 
 void Panel::FocusAppMenu() {
   NOTIMPLEMENTED();
 }
 
 void Panel::FocusBookmarksToolbar() {
   NOTIMPLEMENTED();
 }
 
-void Panel::FocusChromeOSStatus() {
-  NOTIMPLEMENTED();
-}
-
 void Panel::RotatePaneFocus(bool forwards) {
   NOTIMPLEMENTED();
 }
 
 bool Panel::IsBookmarkBarVisible() const {
   return false;
 }
 
 bool Panel::IsBookmarkBarAnimating() const {
   return false;
@@ skipping 282 matching lines @@
 }
 
 void Panel::OnTitlebarClicked(panel::ClickModifier modifier) {
   if (panel_strip_)
     panel_strip_->OnPanelTitlebarClicked(this, modifier);
 }
 
 void Panel::DestroyBrowser() {
   native_panel_->DestroyPanelBrowser();
 }