Try |View::HandleAccessibleAction| before falling back to fixed actions.

ui/views/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 import("//ui/ozone/ozone.gni")
 import("//ui/vector_icons/vector_icons.gni")
@@ skipping 507 matching lines @@
       "//ui/events/devices/x11",
       "//ui/events/platform/x11",
       "//ui/gfx/x",
     ]
   }
 
   if (use_aura) {
     sources += [
       "accessibility/ax_aura_obj_cache.cc",
       "accessibility/ax_aura_obj_cache.h",
+      "accessibility/ax_aura_obj_wrapper.cc",
+      "accessibility/ax_aura_obj_wrapper.h",
       "accessibility/ax_view_obj_wrapper.cc",
       "accessibility/ax_view_obj_wrapper.h",
       "accessibility/ax_widget_obj_wrapper.cc",
       "accessibility/ax_widget_obj_wrapper.h",
       "accessibility/ax_window_obj_wrapper.cc",
       "accessibility/ax_window_obj_wrapper.h",
       "bubble/bubble_window_targeter.cc",
       "bubble/bubble_window_targeter.h",
       "bubble/tray_bubble_view.cc",
       "bubble/tray_bubble_view.h",
@@ skipping 530 matching lines @@
       "//ui/base:test_support",
       "//ui/compositor",
       "//ui/events:test_support",
       "//ui/gl:test_support",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
     ]
   }
 }