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 32 matching lines @@
 const char kAshDisableAlternateFrameCaptionButtonStyle[] =
     "ash-disable-alternate-caption-button";
 
 // Disable the alternate shelf layout.
 const char kAshDisableAlternateShelfLayout[] =
     "ash-disable-alternate-shelf-layout";
 
 // 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";
-
 // Enable advanced gestures (e.g. for window management).
 const char kAshEnableAdvancedGestures[] = "ash-enable-advanced-gestures";
 
 // 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";
 
@@ skipping 88 matching lines @@
 bool UseAlternateShelfLayout() {
   return !CommandLine::ForCurrentProcess()->
       HasSwitch(kAshDisableAlternateShelfLayout);
 }
 
 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