[Aura] Implement views-based applist.

ui/aura/aura_switches.cc

 // Copyright (c) 2011 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 "ui/aura/aura_switches.h"
 
 #include "base/command_line.h"
 
 namespace switches {
 
 // Initial dimensions for the host window in the form "1024x768".
 const char kAuraHostWindowSize[] = "aura-host-window-size";
 
 // Avoid drawing drop shadows under windows.
 const char kAuraNoShadows[] = "aura-no-shadows";
 
 // Use Aura-style translucent window frame.
 const char kAuraTranslucentFrames[] = "aura-translucent-frames";
 
+// Use views-based app list.
+const char kAuraViewsAppList[] = "aura-views-applist";
+
 // Use a custom window style, e.g. --aura-window-mode=compact.
 // When this flag is not passed we default to "normal" mode.
 const char kAuraWindowMode[] = "aura-window-mode";
 
 // Show only a single maximized window, like traditional non-Aura builds.
 // Useful for low-resolution screens, such as on laptops.
 const char kAuraWindowModeCompact[] = "compact";
 
 // Default window management with multiple draggable windows.
 const char kAuraWindowModeNormal[] = "normal";
 
 // Use Aura-style workspace window dragging and sizing.
 const char kAuraWorkspaceManager[] = "aura-workspace-manager";
 
 bool IsAuraWindowModeCompact() {
   std::string mode = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
       switches::kAuraWindowMode);
   return mode == switches::kAuraWindowModeCompact;
 }
 
 }  // namespace switches