aura/cros: Rename MessagePump{X => AuraX11} and move the atom cache into it.

ui/ui.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,
   },
   'includes': [
     'ui_resources.gypi',
@@ skipping 273 matching lines @@
         'base/win/shell.cc',
         'base/win/shell.h',
         'base/win/singleton_hwnd.cc',
         'base/win/singleton_hwnd.h',
         'base/win/window_impl.cc',
         'base/win/window_impl.h',
         'base/work_area_watcher_observer.h',
         'base/x/active_window_watcher_x.cc',
         'base/x/active_window_watcher_x.h',
         'base/x/active_window_watcher_x_observer.h',
-        'base/x/events_x.cc',
+        'base/x/events_aurax11.cc',
         'base/x/root_window_property_watcher_x.cc',
         'base/x/root_window_property_watcher_x.h',
         'base/x/work_area_watcher_x.cc',
         'base/x/work_area_watcher_x.h',
         'base/x/x11_util.cc',
         'base/x/x11_util.h',
         'base/x/x11_util_internal.h',
         'gfx/blit.cc',
         'gfx/blit.h',
         'gfx/canvas.cc',
@@ skipping 335 matching lines @@
               ],
             },
           },
         }, {  # use_x11==0
           'sources!': [
             'base/keycodes/keyboard_code_conversion_x.cc',
             'base/keycodes/keyboard_code_conversion_x.h',
             'base/x/',
           ],
         }],
-        ['toolkit_views==0', {
-          'sources!': [
-            'base/x/events_x.cc',
-          ],
-        }],
         ['toolkit_views==0 and use_canvas_skia==0', {
           'sources!': [
             'gfx/render_text.cc',
             'gfx/render_text.h',
             'gfx/render_text_linux.cc',
             'gfx/render_text_linux.h',
             'gfx/render_text_win.cc',
             'gfx/render_text_win.h',
           ],
         }],
@@ skipping 77 matching lines @@
                 'shutil.copyfile(\'<(ui_copy_target)\', \'<(ui_copy_dest)\'); ' \
                 'os.chmod(\'<(ui_copy_dest)\', 0700)'
               ]
             }
           ],
         },
       ],
     }],
   ],
 }