Cleanup: supervised_user_theme.cc should not be built if themes are not enabled.

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 2330 matching lines @@
       'browser/supervised_user/supervised_user_shared_settings_update.h',
       'browser/supervised_user/supervised_user_site_list.cc',
       'browser/supervised_user/supervised_user_site_list.h',
       'browser/supervised_user/supervised_user_sync_data_type_controller.cc',
       'browser/supervised_user/supervised_user_sync_data_type_controller.h',
       'browser/supervised_user/supervised_user_sync_service.cc',
       'browser/supervised_user/supervised_user_sync_service.h',
       'browser/supervised_user/supervised_user_sync_service_factory.cc',
       'browser/supervised_user/supervised_user_sync_service_factory.h',
       'browser/supervised_user/supervised_user_sync_service_observer.h',
-      'browser/supervised_user/supervised_user_theme.cc',
-      'browser/supervised_user/supervised_user_theme.h',
       'browser/supervised_user/supervised_user_url_filter.cc',
       'browser/supervised_user/supervised_user_url_filter.h',
       'browser/supervised_user/supervised_users.h',
     ],
+    'chrome_browser_supervised_user_and_themes_sources': [
+      'browser/supervised_user/supervised_user_theme.cc',
+      'browser/supervised_user/supervised_user_theme.h',
+    ],
     'chrome_browser_undo_sources': [
       'browser/undo/bookmark_undo_service.cc',
       'browser/undo/bookmark_undo_service_factory.cc',
       'browser/undo/bookmark_undo_service_factory.h',
       'browser/undo/bookmark_undo_service.h',
       'browser/undo/bookmark_undo_utils.cc',
       'browser/undo/bookmark_undo_utils.h',
       'browser/undo/undo_manager.cc',
       'browser/undo/undo_manager.h',
     ],
@@ skipping 1054 matching lines @@
           'sources': [ '<@(chrome_browser_plugin_installation_sources)' ],
         }],
         ['enable_app_list==1', {
           'dependencies': [
             '../ui/app_list/app_list.gyp:app_list',
           ]
         }],
         ['enable_managed_users==1', {
           'sources': [ '<@(chrome_browser_supervised_user_sources)' ],
         }],
+        ['enable_managed_users==1 and enable_themes==1', {
+          'sources': [ '<@(chrome_browser_supervised_user_and_themes_sources)' ],
+        }],
         ['enable_webrtc==1', {
           'sources': [ '<@(chrome_browser_webrtc_sources)' ]
         }],
         ['enable_service_discovery==1', {
           'sources': [ '<@(chrome_browser_service_discovery_sources)' ]
         }],
         ['enable_mdns==1', {
           'sources' : [ '<@(chrome_browser_mdns_sources)' ]
         }],
         ['enable_autofill_dialog!=1 or OS=="android" or OS=="ios"', {
@@ skipping 191 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' ]
         },
       ],
     },],
   ],
 }