Move DisplayManager and DisplayChangeObserverX11 from aura to ash.

ui/aura/aura.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,
   },
   'targets': [
     {
@@ skipping 46 matching lines @@
         'client/user_action_client.cc',
         'client/user_action_client.h',
         'client/visibility_client.cc',
         'client/visibility_client.h',
         'client/window_move_client.cc',
         'client/window_move_client.h',
         'client/window_types.h',
         'device_list_updater_aurax11.cc',
         'device_list_updater_aurax11.h',
         'dispatcher_win.cc',
-        'display_observer.cc',
-        'display_observer.h',
+        'display_util.cc',
+        'display_util.h',
         'env.cc',
         'env.h',
         'env_observer.h',
         'event_filter.cc',
         'event_filter.h',
         'focus_change_observer.h',
         'focus_manager.cc',
         'focus_manager.h',
         'layout_manager.cc',
         'layout_manager.h',
-        'display_change_observer_x11.cc',
-        'display_change_observer_x11.h',
-        'display_manager.cc',
-        'display_manager.h',
         'remote_root_window_host_win.cc',
         'remote_root_window_host_win.h',
         'root_window_host.h',
         'root_window_host_delegate.h',
         'root_window_host_linux.cc',
         'root_window_host_linux.h',
         'root_window_host_mac.h',
         'root_window_host_mac.mm',
         'root_window_host_win.cc',
         'root_window_host_win.h',
         'root_window_mac.h',
         'root_window_mac.mm',
         'root_window_view_mac.h',
         'root_window_view_mac.mm',
         'root_window.cc',
         'root_window.h',
-        'single_display_manager.cc',
-        'single_display_manager.h',
         'ui_controls_win.cc',
         'ui_controls_x11.cc',
         'window.cc',
         'window.h',
         'window_delegate.cc',
         'window_delegate.h',
         'window_observer.h',
         'window_tracker.cc',
         'window_tracker.h',
       ],
@@ skipping 91 matching lines @@
         '../../base/base.gyp:base_i18n',
         '../../skia/skia.gyp:skia',
         '../../third_party/icu/icu.gyp:icui18n',
         '../../third_party/icu/icu.gyp:icuuc',
         '../compositor/compositor.gyp:compositor',
         '../compositor/compositor.gyp:compositor_test_support',
         '../ui.gyp:ui',
         '../ui.gyp:ui_resources',
         '../../ipc/ipc.gyp:ipc',
         'aura',
+        'test_support_aura',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'demo/demo_main.cc',
       ],
     },
     {
       'target_name': 'aura_bench',
       'type': 'executable',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../base/base.gyp:base_i18n',
         '../../skia/skia.gyp:skia',
         '../../third_party/icu/icu.gyp:icui18n',
         '../../third_party/icu/icu.gyp:icuuc',
         '../compositor/compositor.gyp:compositor',
         '../compositor/compositor.gyp:compositor_test_support',
         '../ui.gyp:ui',
         '../ui.gyp:ui_resources',
         'aura',
+        'test_support_aura',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'bench/bench_main.cc',
       ],
     },
     {
       'target_name': 'aura_unittests',
@@ skipping 28 matching lines @@
         # osmesa GL implementation is used on linux.
         ['OS=="linux"', {
           'dependencies': [
             '<(DEPTH)/third_party/mesa/mesa.gyp:osmesa',
           ],
         }],
       ],
     },
   ],
 }