Move views::Accelerator to ui in order to use it from aura code.

views/views.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
   },
 
   'target_defaults': {
     'conditions': [
@@ skipping 37 matching lines @@
         '../ui/gfx/compositor/compositor.gyp:compositor',
         '../ui/ui.gyp:ui',
         '../ui/ui.gyp:ui_resources',
         '../ui/ui.gyp:ui_resources_standard',
       ],
       'defines': [
         'VIEWS_IMPLEMENTATION',
       ],
       'sources': [
         # All .cc, .h under views, except unittests
-        'accelerator.cc',
-        'accelerator.h',
         'accessibility/native_view_accessibility_win.cc',
         'accessibility/native_view_accessibility_win.h',
         'accessible_pane_view.cc',
         'accessible_pane_view.h',
         'animation/bounds_animator.cc',
         'animation/bounds_animator.h',
         'background.cc',
         'background.h',
         'border.cc',
         'border.h',
@@ skipping 862 matching lines @@
               'include_dirs': [
                 '../third_party/wtl/include',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }