Fix the issue of cursor's device scale factor when using monitors with differnt device scale factor.

chrome/chrome_tests.gypi

 # 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' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 580 matching lines @@
           'sources/': [
             ['exclude', '^browser/notifications/'],
           ],
         }],
         ['toolkit_views==1', {
           'dependencies': [
             '../ui/views/views.gyp:views',
             '../ui/views/views.gyp:test_support_views',
           ],
         }],
+        ['use_ash==1', {
+          'dependencies': [
+            '../ash/ash.gyp:test_support_ash',
+          ],
+        }],
         ['chromeos==1', {
           'sources': [
             'browser/chromeos/cros/cros_in_process_browser_test.cc',
             'browser/chromeos/cros/cros_in_process_browser_test.h',
             'browser/chromeos/cros/cros_mock.cc',
             'browser/chromeos/cros/cros_mock.h',
             'browser/chromeos/login/mock_authenticator.cc',
             'browser/chromeos/login/mock_authenticator.h',
             'browser/chromeos/login/screen_locker_browsertest.cc',
             'browser/chromeos/login/screen_locker_tester.cc',
@@ skipping 4254 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'browser_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }