Expose UseCounter::Feature enum out of blink as WebFeature

WATCHLISTS

 # 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.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 1140 matching lines @@
                   '|chrome/app/theme/'
     },
     'ui_strings': {
       'filepath': 'chrome/app/generated_resources.grd'\
                   '|chrome/app/google_chrome_strings.grd'\
                   '|chrome/android/java/strings/android_chrome_strings.grd'\
                   '|chrome/app/settings_strings.grdp'\
                   '|ios/chrome/app/strings/ios(_.+)*_strings.grd'\
                   '|ui/strings/ui_strings.grd',
     },
+    {
+    'use_counter_features': {
+      'filepath': 'third_party/WebKit/public/platform/UseCounterFeature.def',
+    },
     'valgrind': {
       'filepath': 'valgrind',
     },
     'version_assembly': {
       'filepath': 'chrome/app/version_assembly',
     },
     'video': {
       'filepath': 'content/browser/renderer_host/media/|'\
                   'content/renderer/media/|'\
                   'media/capture/video/|'\
@@ skipping 1094 matching lines @@
                            'shuchen+watch@chromium.org',
                            'yusukes+watch@chromium.org'],
     'timers': ['chirantan+watch@chromium.org'],
     'tools_win_chromeexts': ['robliao+watch@chromium.org'],
     'tracing': ['tracing+reviews@chromium.org',
                 'wfh+watch@chromium.org'],
     'ui_compositor': ['cc-bugs@chromium.org'],
     'ui_display_win': ['robliao+watch@chromium.org'],
     'ui_resources': ['oshima+watch@chromium.org'],
     'ui_strings': ['srahim+watch@chromium.org'],
+    'use_counter_features': ['lunalu@chromium.org'],
     'valgrind': ['bruening+watch@chromium.org',
                  'glider+watch@chromium.org'],
     'version_assembly': ['caitkp+watch@chromium.org',
                          'gab+watch@chromium.org'],
     'video': ['posciak+watch@chromium.org'],
     'video_capture': ['chfremer+watch@chromium.org'],
     'views': ['tfarina@chromium.org'],
     'virtual_keyboard': ['blakeo+virtualkb@chromium.org',
                          'dfaden+virtualkb@google.com',
                          'groby+virtualkb@chromium.org',
                          'oka+watchvk@chromium.org',
                          'yhanada+watchvk@chromium.org'],
     'virtual_reality': ['feature-vr-reviews@chromium.org'],
     'webrtc_browser_tests': ['phoglund+watch@chromium.org'],
     'website_settings': ['markusheintz@chromium.org',
                          'msramek+watch@chromium.org',
                          'raymes+watch@chromium.org'],
     'windows_sandboxing': ['pennymac+watch@chromium.org',
                            'wfh+watch@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
     'zoom': ['wjmaclean@chromium.org'],
   },
 }