Remove now-unnecessary wrappers around gfx::Screen::GetScreen()

chrome/browser/extensions/display_info_provider_chromeos.cc

 // Copyright 2014 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/extensions/display_info_provider_chromeos.h"
 
 #include <stdint.h>
 
 #include "ash/display/display_manager.h"
 #include "ash/display/window_tree_host_manager.h"
@@ skipping 364 matching lines @@
                 display_info.bounds_in_native().height();
 
   const gfx::Insets overscan_insets =
       display_manager->GetOverscanInsets(display.id());
   unit->overscan.left = overscan_insets.left();
   unit->overscan.top = overscan_insets.top();
   unit->overscan.right = overscan_insets.right();
   unit->overscan.bottom = overscan_insets.bottom();
 }
 
-gfx::Screen* DisplayInfoProviderChromeOS::GetActiveScreen() {
-  return ash::Shell::GetScreen();
-}
-
 void DisplayInfoProviderChromeOS::EnableUnifiedDesktop(bool enable) {
   ash::Shell::GetInstance()->display_manager()->SetUnifiedDesktopEnabled(
       enable);
 }
 
 DisplayInfo DisplayInfoProviderChromeOS::GetAllDisplaysInfo() {
   ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
   if (!display_manager->IsInUnifiedMode())
     return DisplayInfoProvider::GetAllDisplaysInfo();
@@ skipping 13 matching lines @@
   }
   return all_displays;
 }
 
 // static
 DisplayInfoProvider* DisplayInfoProvider::Create() {
   return new DisplayInfoProviderChromeOS();
 }
 
 }  // namespace extensions