Record document mode histogram in UMA on every upload.

chrome/chrome_browser.gypi

 # Copyright 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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 35 matching lines @@
       'browser/android/dev_tools_server.cc',
       'browser/android/dev_tools_server.h',
       'browser/android/dev_tools_manager_delegate_android.cc',
       'browser/android/dev_tools_manager_delegate_android.h',
       'browser/android/dom_distiller/feedback_reporter_android.cc',
       'browser/android/dom_distiller/feedback_reporter_android.h',
       'browser/android/enhanced_bookmarks/enhanced_bookmarks_bridge.cc',
       'browser/android/enhanced_bookmarks/enhanced_bookmarks_bridge.h',
       'browser/android/favicon_helper.cc',
       'browser/android/favicon_helper.h',
+      'browser/android/feature_utilities.cc',
+      'browser/android/feature_utilities.h',
       'browser/android/foreign_session_helper.cc',
       'browser/android/foreign_session_helper.h',
       'browser/android/logo_bridge.cc',
       'browser/android/logo_bridge.h',
       'browser/android/logo_service.cc',
       'browser/android/logo_service.h',
       'browser/android/meta_tag_observer.cc',
       'browser/android/meta_tag_observer.h',
       'browser/android/new_tab_page_prefs.cc',
       'browser/android/new_tab_page_prefs.h',
@@ skipping 2679 matching lines @@
       'android/java/src/org/chromium/chrome/browser/signin/AccountManagementScreenHelper.java',
       'android/java/src/org/chromium/chrome/browser/signin/OAuth2TokenService.java',
       'android/java/src/org/chromium/chrome/browser/signin/SigninManager.java',
       'android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java',
       'android/java/src/org/chromium/chrome/browser/tabmodel/TabModelBase.java',
       'android/java/src/org/chromium/chrome/browser/Tab.java',
       'android/java/src/org/chromium/chrome/browser/TtsPlatformImpl.java',
       'android/java/src/org/chromium/chrome/browser/UmaBridge.java',
       'android/java/src/org/chromium/chrome/browser/UmaUtils.java',
       'android/java/src/org/chromium/chrome/browser/UrlUtilities.java',
+      'android/java/src/org/chromium/chrome/browser/util/FeatureUtilities.java',
       'android/java/src/org/chromium/chrome/browser/VoiceSearchTabHelper.java',
       'android/java/src/org/chromium/chrome/browser/WebsiteSettingsPopup.java',
       'android/java/src/org/chromium/chrome/browser/infobar/AutoLoginDelegate.java',
       'android/java/src/org/chromium/chrome/browser/infobar/ConfirmInfoBarDelegate.java',
       'android/java/src/org/chromium/chrome/browser/infobar/DataReductionProxyInfoBarDelegate.java',
       'android/java/src/org/chromium/chrome/browser/infobar/InfoBar.java',
       'android/java/src/org/chromium/chrome/browser/infobar/InfoBarContainer.java',
       'android/java/src/org/chromium/chrome/browser/infobar/SavePasswordInfoBarDelegate.java',
       'android/java/src/org/chromium/chrome/browser/infobar/TranslateInfoBarDelegate.java',
       'android/java/src/org/chromium/chrome/browser/invalidation/InvalidationController.java',
@@ skipping 822 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }