Add Aura handles to be used in unified touch selection

ui/touch_selection/ui_touch_selection_unittests.isolate

 # Copyright (c) 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.
 {
   'conditions': [
     ['OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'files': [
           '../../testing/test_env.py',
           '<(PRODUCT_DIR)/ui_touch_selection_unittests<(EXECUTABLE_SUFFIX)',
+          '<(PRODUCT_DIR)/ui_test.pak',
         ],
       },
     }],
     ['OS=="linux"', {
       'variables': {
         'command': [
           '../../testing/xvfb.py',
           '<(PRODUCT_DIR)',
           '<(PRODUCT_DIR)/ui_touch_selection_unittests<(EXECUTABLE_SUFFIX)',
           '--brave-new-test-launcher',
@@ skipping 33 matching lines @@
         'files': [
           '<(PRODUCT_DIR)/ui_touch_selection_unittests.dSYM/',
         ],
       },
     }],
   ],
   'includes': [
     '../../base/base.isolate',
   ],
 }