events: Dispatch all events through EventHandler::OnEvent from the dispatcher.

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 783 matching lines @@
         }, {  # use_x11==0
           'sources/': [
             ['exclude', 'base/keycodes/keyboard_code_conversion_x.*'],
             ['exclude', 'base/x/*'],
           ],
         }],
         ['toolkit_views==0', {
           'sources!': [
             'base/events/event.cc',
             'base/events/event.h',
+            'base/events/event_dispatcher.cc',
+            'base/events/event_dispatcher.h',
+            'base/events/event_handler.cc',
+            'base/events/event_handler.h',
+            'base/events/event_target.cc',
+            'base/events/event_target.h',
             'base/x/events_x.cc',
           ],
         }],
         ['OS=="android"', {
           'sources!': [
             'base/dragdrop/drag_utils.cc',
             'base/dragdrop/drag_utils.h',
             'base/touch/touch_factory.cc',
             'base/touch/touch_factory.h',
             'gfx/pango_util.cc',
@@ skipping 67 matching lines @@
            },
            'dependencies': [
              '../base/base.gyp:base_java',
            ],
            'includes': [ '../build/java.gypi' ],
          },
        ],
     }],
   ],
 }