Change MessagePumpLinux to MessagePumpOzone

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': [
     'shell_dialogs.gypi',
@@ skipping 798 matching lines @@
             '../build/linux/system.gyp:x11',
             '../build/linux/system.gyp:xext',
             '../build/linux/system.gyp:xfixes',
           ],
         }, {  # use_x11==0
           'sources/': [
             ['exclude', 'base/keycodes/keyboard_code_conversion_x.*'],
             ['exclude', 'base/x/*'],
           ],
         }],
-        ['use_messagepump_linux==0', {
+        ['use_ozone==0', {
           'sources!': [
             'base/cursor/cursor_null.cc',
             'base/cursor/cursor_loader_null.cc',
             'base/cursor/cursor_loader_null.h',
           ],
         }],
         ['toolkit_views==0', {
           'sources!': [
             'base/events/event.cc',
             'base/events/event.h',
@@ skipping 172 matching lines @@
               'xcode_settings': {
                 'GCC_SYMBOLS_PRIVATE_EXTERN': 'NO',
               },
             }],
           ],
         },
       ],
     }],
   ],
 }