app_list: Create an app_list_switches.* to put all app list switches.

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"
 
 namespace ash {
 namespace switches {
 
-// Show only apps result in app list search.
-// TODO(xiyuan): Create an app_list_switches.cc to put all app list switches.
-const char kAppListShowAppsOnly[] = "app-list-show-apps-only";
-
 // Enable keyboard shortcuts useful for debugging.
 const char kAshDebugShortcuts[] = "ash-debug-shortcuts";
 
 // Enables the Oak tree viewer.
 const char kAshEnableOak[] = "ash-enable-oak";
 
 // Enable extended desktop.
 const char kAshExtendedDesktop[] = "ash-extended-desktop";
 
 // Disable using Ash notifications.
@@ skipping 15 matching lines @@
 // Standard hardware reports releases immediately after presses.  If set, we
 // lock the screen or shutdown the system immediately in response to a press
 // instead of displaying an interactive animation.
 const char kAuraLegacyPowerButton[] = "aura-legacy-power-button";
 
 // Avoid drawing drop shadows under windows.
 const char kAuraNoShadows[] = "aura-no-shadows";
 
 }  // namespace switches
 }  // namespace ash