Remove oak windows and its flags.

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 109 matching lines @@
 
 #if defined(OS_CHROMEOS)
 // Enables key bindings to scroll magnified screen.
 const char kAshEnableMagnifierKeyScroller[] =
     "ash-enable-magnifier-key-scroller";
 
 // Enables the multi user icons in the system tray.
 const char kAshEnableMultiUserTray[] = "ash-enable-multi-user-tray";
 #endif
 
-// Enables the Oak tree viewer.
-const char kAshEnableOak[] = "ash-enable-oak";
-
 // Enables software based mirroring.
 const char kAshEnableSoftwareMirroring[] = "ash-enable-software-mirroring";
 
 // When this flag is set, system sounds will be played whether the
 // ChromeVox is enabled or not.
 const char kAshEnableSystemSounds[] = "ash-enable-system-sounds";
 
 // Enables showing the tray bubble by dragging on the shelf.
 const char kAshEnableTrayDragging[] = "ash-enable-tray-dragging";
 
@@ skipping 121 matching lines @@
 
 #if defined(OS_CHROMEOS)
 bool UseUsbChargerNotification() {
   return !CommandLine::ForCurrentProcess()->
       HasSwitch(kAshDisableUsbChargerNotification);
 }
 #endif
 
 }  // namespace switches
 }  // namespace ash