Introduce WindowStateDelegate::ToggleFullscreen

ash/ash.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
   },
   'includes': [
@@ skipping 518 matching lines @@
         'wm/window_animations.cc',
         'wm/window_animations.h',
         'wm/window_cycle_controller.cc',
         'wm/window_cycle_controller.h',
         'wm/window_cycle_list.cc',
         'wm/window_cycle_list.h',
         'wm/window_positioner.cc',
         'wm/window_positioner.h',
         'wm/window_state.cc',
         'wm/window_state.h',
+        'wm/window_state_delegate.cc',
+        'wm/window_state_delegate.h',
         'wm/window_state_observer.h',
         'wm/window_properties.cc',
         'wm/window_properties.h',
         'wm/window_resizer.cc',
         'wm/window_resizer.h',
         'wm/window_util.cc',
         'wm/window_util.h',
         'wm/wm_types.cc',
         'wm/wm_types.h',
         'wm/workspace_controller.cc',
@@ skipping 404 matching lines @@
             },
           },
           'dependencies': [
             '../sandbox/sandbox.gyp:sandbox',
           ],
         }],
       ],
     },
   ],
 }