Add support for rect-based event targeting in views

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,
   },
   'target_defaults': {
     'conditions': [
       ['use_aura==1', {
@@ skipping 315 matching lines @@
         'metrics_win.cc',
         'mouse_constants.cc',
         'mouse_constants.h',
         'mouse_watcher.cc',
         'mouse_watcher.h',
         'mouse_watcher_view_host.cc',
         'mouse_watcher_view_host.h',
         'native_theme_delegate.h',
         'painter.cc',
         'painter.h',
+        'rect_based_targeting_utils.cc',
+        'rect_based_targeting_utils.h',
         'repeat_controller.cc',
         'repeat_controller.h',
         'round_rect_painter.cc',
         'round_rect_painter.h',
         'shadow_border.cc',
         'shadow_border.h',
         'touchui/touch_editing_menu.cc',
         'touchui/touch_editing_menu.h',
         'touchui/touch_selection_controller_impl.cc',
         'touchui/touch_selection_controller_impl.h',
@@ skipping 740 matching lines @@
           'sources/': [
             # This is needed because the aura rule strips it from the default
             # sources list.
             ['include', '^../../content/app/startup_helper_win.cc'],
           ],
         }],
       ],
     },  # target_name: views_examples_with_content_exe
   ],
 }