Remove --ash-disable-overview-mode

ash/ash_switches.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 "ash/ash_switches.h"
 
 #include "base/command_line.h"
 
 namespace ash {
 namespace switches {
@@ skipping 35 matching lines @@
 #if defined(OS_CHROMEOS)
 // Disable the status tray volume menu for allowing the user to choose an audio
 // input and output device.
 const char kAshDisableAudioDeviceMenu[] =
     "ash-disable-audio-device-menu";
 #endif
 
 // Disable ability to dock windows at the desktop edge.
 const char kAshDisableDockedWindows[] = "ash-disable-docked-windows";
 
-// Disables overview mode for window switching.
-const char kAshDisableOverviewMode[] = "ash-disable-overview-mode";
-
 // Use alternate visual style for the caption buttons (minimize, maximize,
 // restore, close). The alternate style:
 // - Adds a dedicated button for minimize.
 // - Removes the maximize button's help bubble.
 const char kAshEnableAlternateFrameCaptionButtonStyle[] =
     "ash-enable-alternate-caption-button";
 
 // Always enable brightness control. Used by machines that don't report their
 // main monitor as internal.
 const char kAshEnableBrightnessControl[] = "ash-enable-brightness-control";
@@ skipping 72 matching lines @@
 bool UseAlternateFrameCaptionButtonStyle() {
   return !CommandLine::ForCurrentProcess()->
       HasSwitch(kAshDisableAlternateFrameCaptionButtonStyle);
 }
 
 bool UseImmersiveFullscreenForAllWindows() {
   return !CommandLine::ForCurrentProcess()->HasSwitch(
       kAshEnableImmersiveFullscreenForBrowserOnly);
 }
 
-bool UseOverviewMode() {
-  return !CommandLine::ForCurrentProcess()->HasSwitch(kAshDisableOverviewMode);
-}
-
 bool UseDockedWindows() {
   return !CommandLine::ForCurrentProcess()->HasSwitch(kAshDisableDockedWindows);
 }
 
 }  // namespace switches
 }  // namespace ash