Allow dynamic enabling/disabling of unified desktop

ash/accelerators/debug_commands.cc

 // Copyright 2013 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/accelerators/debug_commands.h"
 
 #include "ash/accelerators/accelerator_commands.h"
 #include "ash/ash_switches.h"
 #include "ash/debug.h"
 #include "ash/desktop_background/desktop_background_controller.h"
@@ skipping 130 matching lines @@
 
 void PerformDebugActionIfEnabled(AcceleratorAction action) {
   if (!DebugAcceleratorsEnabled())
     return;
 
   switch (action) {
 #if defined(OS_CHROMEOS)
     case DEBUG_ADD_REMOVE_DISPLAY:
       Shell::GetInstance()->display_manager()->AddRemoveDisplay();
       break;
+    case DEBUG_TOGGLE_UNIFIED_DESKTOP:
+      Shell::GetInstance()->display_manager()->SetUnifiedDesktopEnabled(
+          !Shell::GetInstance()->display_manager()->unified_desktop_enabled());
+      break;
 #endif
     case DEBUG_PRINT_LAYER_HIERARCHY:
       HandlePrintLayerHierarchy();
       break;
     case DEBUG_PRINT_VIEW_HIERARCHY:
       HandlePrintViewHierarchy();
       break;
     case DEBUG_PRINT_WINDOW_HIERARCHY:
       HandlePrintWindowHierarchy();
       break;
@@ skipping 15 matching lines @@
     case DEBUG_TOGGLE_SHOW_PAINT_RECTS:
       ToggleShowPaintRects();
       break;
     default:
       break;
   }
 }
 
 }  // namespace debug
 }  // namespace ash