Adds MD ink ripple animations to buttons within location bar

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 305 matching lines @@
       'widget/tooltip_manager.h',
       'widget/widget.cc',
       'widget/widget.h',
       'widget/widget_aura_utils.cc',
       'widget/widget_aura_utils.h',
       'widget/widget_delegate.cc',
       'widget/widget_delegate.h',
       'widget/widget_deletion_observer.cc',
       'widget/widget_deletion_observer.h',
       'widget/widget_observer.h',
+      'widget/widget_observer_view.h',
       'widget/widget_removals_observer.h',
       'window/client_view.cc',
       'window/client_view.h',
       'window/custom_frame_view.cc',
       'window/custom_frame_view.h',
       'window/dialog_client_view.cc',
       'window/dialog_client_view.h',
       'window/dialog_delegate.cc',
       'window/dialog_delegate.h',
       'window/frame_background.cc',
@@ skipping 637 matching lines @@
                 '../aura/aura.gyp:aura',
                 '../wm/wm.gyp:wm',
               ],
             }],
           ],
         },  # target_name: macviews_interactive_ui_tests
       ],  # targets
     }],
   ],  # conditions
 }