Remove GTEST_LANG_CXX11 and switch to C++11 on gtest and gmock

ui/events/events_unittests.gyp

 # Copyright 2015 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,
   },
   'targets': [
     {
@@ skipping 47 matching lines @@
         'ipc/latency_info_param_traits_unittest.cc',
         'keycodes/dom/keycode_converter_unittest.cc',
         'keycodes/keyboard_code_conversion_unittest.cc',
         'keycodes/platform_key_map_win_unittest.cc',
         'latency_info_unittest.cc',
         'platform/platform_event_source_unittest.cc',
         'scoped_target_handler_unittest.cc',
         'win/event_utils_win_unittest.cc',
         'x/events_x_unittest.cc',
       ],
-      'include_dirs': [
-        '../../testing/gmock/include',
-      ],
       'conditions': [
         ['use_x11==1', {
           'dependencies': [
             '../../build/linux/system.gyp:x11',
             '../gfx/x/gfx_x11.gyp:gfx_x11',
             'devices/x11/events_devices_x11.gyp:events_devices_x11',
             'x/events_x.gyp:events_x',
           ],
         }],
         ['use_ozone==1', {
@@ skipping 108 matching lines @@
               'dependencies': [
                 '../../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }