Workaround for flaky ax_enums.h errors when compiling under app_list_presenter

ui/app_list/presenter/BUILD.gn

 # Copyright 2016 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/ui.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 assert(use_aura)
 
@@ skipping 12 matching lines @@
 
   defines = [ "APP_LIST_PRESENTER_IMPLEMENTATION" ]
 
   public_deps = [
     "//base",
     "//ui/app_list",
     "//ui/aura",
     "//ui/compositor",
     "//ui/gfx/geometry",
     "//ui/views",
+
+    # Temporary dependency to fix compile flake in http://crbug.com/611898.
+    # TODO(tapted): Remove once http://crbug.com/612382 is fixed.
+    "//ui/accessibility:ax_gen",
   ]
 }
 
 mojom("mojom") {
   sources = [
     "app_list_presenter.mojom",
   ]
   deps = [
     "//components/mus/public/interfaces",
   ]
@@ skipping 32 matching lines @@
     "//ui/aura:test_support",
     "//ui/base",
     "//ui/gl:test_support",
     "//ui/wm:wm",
   ]
 
   data_deps = [
     "//ui/resources:ui_test_pak_data",
   ]
 }