Move Screen, its impls, DisplayObserver and DisplayChangeNotifier to ui/display

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,
     # These files lists are shared with the GN build.
     'ash_sources': [
       'accelerators/accelerator_commands.cc',
@@ skipping 1036 matching lines @@
       'type': '<(component)',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../content/content.gyp:content_browser',
         '../ipc/ipc.gyp:ipc',
         '../skia/skia.gyp:skia',
         '../ui/aura/aura.gyp:aura',
         '../ui/base/ui_base.gyp:ui_base',
         '../ui/compositor/compositor.gyp:compositor',
+        '../ui/display/display.gyp:display',
         '../ui/events/events.gyp:events',
         '../ui/gfx/gfx.gyp:gfx',
         '../ui/gfx/gfx.gyp:gfx_geometry',
         '../ui/keyboard/keyboard.gyp:keyboard_with_content',
         '../ui/resources/ui_resources.gyp:ui_resources',
         '../ui/strings/ui_strings.gyp:ui_strings',
         '../ui/views/controls/webview/webview.gyp:webview',
         '../ui/views/views.gyp:views',
         '../ui/web_dialogs/web_dialogs.gyp:web_dialogs',
         '../url/url.gyp:url_lib',
@@ skipping 282 matching lines @@
                   '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
                 ],
               }
             ],
           ],
         },
       ],
     }],
   ],
 }