Remove --background-color-instead-of-checkerboard flag.

chrome/browser/chromeos/login/chrome_restart_request.cc

 // Copyright 2013 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/chrome_restart_request.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "base/command_line.h"
@@ skipping 139 matching lines @@
       ash::switches::kAshDefaultWallpaperLarge,
       ash::switches::kAshDefaultWallpaperSmall,
       ash::switches::kAshGuestWallpaperLarge,
       ash::switches::kAshGuestWallpaperSmall,
       ash::switches::kAshHostWindowBounds,
       ash::switches::kAshTouchHud,
       ash::switches::kAuraLegacyPowerButton,
       // Please keep these in alphabetical order. Non-UI Compositor switches
       // here should also be added to
       // content/browser/renderer_host/render_process_host_impl.cc.
-      cc::switches::kBackgroundColorInsteadOfCheckerboard,
       cc::switches::kCompositeToMailbox,
       cc::switches::kDisableCompositedAntialiasing,
       cc::switches::kDisableCompositorTouchHitTesting,
       cc::switches::kDisableGPURasterization,
       cc::switches::kDisableImplSidePainting,
       cc::switches::kDisableMapImage,
       cc::switches::kDisableThreadedAnimation,
       cc::switches::kEnableGpuBenchmarking,
       cc::switches::kEnableGPURasterization,
       cc::switches::kEnableImplSidePainting,
@@ skipping 181 matching lines @@
     // Relaunch chrome without session manager on dev box.
     ReLaunch(command_line);
     return;
   }
 
   // ChromeRestartRequest deletes itself after request sent to session manager.
   (new ChromeRestartRequest(command_line))->Start();
 }
 
 }  // namespace chromeos