MacViews: Create abstraction for event monitoring

ui/views/views.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,
     # Sources lists shared with GN build.
     'views_sources': [
       'accessibility/native_view_accessibility.cc',
       'accessibility/native_view_accessibility.h',
@@ skipping 189 matching lines @@
       'controls/tree/tree_view_controller.cc',
       'controls/tree/tree_view_controller.h',
       'cull_set.cc',
       'cull_set.h',
       'debug_utils.cc',
       'debug_utils.h',
       'drag_controller.h',
       'drag_utils.cc',
       'drag_utils.h',
       'drag_utils_aura.cc',
+      'event_monitor.h',
+      'event_monitor_aura.cc',
+      'event_monitor_aura.h',
+      'event_monitor_mac.h',
+      'event_monitor_mac.mm',
       'focus/external_focus_tracker.cc',
       'focus/external_focus_tracker.h',
       'focus/focus_manager.cc',
       'focus/focus_manager.h',
       'focus/focus_manager_delegate.h',
       'focus/focus_manager_factory.cc',
       'focus/focus_manager_factory.h',
       'focus/focus_search.cc',
       'focus/focus_search.h',
       'focus/view_storage.cc',
@@ skipping 26 matching lines @@
       'linux_ui/window_button_order_observer.h',
       'linux_ui/window_button_order_provider.cc',
       'masked_targeter_delegate.cc',
       'masked_targeter_delegate.h',
       'metrics.cc',
       'metrics.h',
       'metrics_aura.cc',
       'metrics_mac.cc',
       'mouse_constants.h',
       'mouse_watcher.h',
-      'mouse_watcher_aura.cc',
+      'mouse_watcher.cc',
       'native_cursor.h',
       'native_cursor_aura.cc',
       'native_cursor_mac.mm',
       'native_theme_delegate.h',
       'painter.cc',
       'painter.h',
       'rect_based_targeting_utils.cc',
       'rect_based_targeting_utils.h',
       'repeat_controller.cc',
       'repeat_controller.h',
@@ skipping 255 matching lines @@
       'controls/slider_unittest.cc',
       'controls/styled_label_unittest.cc',
       'controls/tabbed_pane/tabbed_pane_unittest.cc',
       'controls/table/table_utils_unittest.cc',
       'controls/table/table_view_unittest.cc',
       'controls/table/test_table_model.cc',
       'controls/table/test_table_model.h',
       'controls/textfield/textfield_unittest.cc',
       'controls/textfield/textfield_model_unittest.cc',
       'controls/tree/tree_view_unittest.cc',
+      'event_monitor_mac_unittest.mm',
       'focus/focus_manager_unittest.cc',
       'focus/focus_traversal_unittest.cc',
       'ime/input_method_bridge_unittest.cc',
       'layout/box_layout_unittest.cc',
       'layout/grid_layout_unittest.cc',
       'rect_based_targeting_utils_unittest.cc',
       'run_all_unittests.cc',
       'view_model_unittest.cc',
       'view_model_utils_unittest.cc',
       'view_targeter_unittest.cc',
@@ skipping 335 matching lines @@
                 '../aura/aura.gyp:aura',
                 '../wm/wm.gyp:wm',
               ],
             }],
           ],
         },  # target_name: macviews_interactive_ui_tests
       ],  # targets
     }],
   ],  # conditions
 }