Make it possible to build without enable_supervised_users.

chrome/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 243 matching lines @@
     "component_updater/pnacl_component_installer.cc",
     "component_updater/pnacl_component_installer.h",
     "component_updater/recovery_component_installer.cc",
     "component_updater/recovery_component_installer.h",
     "component_updater/recovery_improved_component_installer.cc",
     "component_updater/recovery_improved_component_installer.h",
     "component_updater/sth_set_component_installer.cc",
     "component_updater/sth_set_component_installer.h",
     "component_updater/subresource_filter_component_installer.cc",
     "component_updater/subresource_filter_component_installer.h",
-    "component_updater/supervised_user_whitelist_installer.cc",
-    "component_updater/supervised_user_whitelist_installer.h",
     "component_updater/sw_reporter_installer_win.cc",
     "component_updater/sw_reporter_installer_win.h",
     "conflicts/installed_programs_win.cc",
     "conflicts/installed_programs_win.h",
     "conflicts/module_database_observer_win.h",
     "conflicts/module_database_win.cc",
     "conflicts/module_database_win.h",
     "conflicts/module_event_sink_impl_win.cc",
     "conflicts/module_event_sink_impl_win.h",
     "conflicts/module_info_util_win.cc",
@@ skipping 1066 matching lines @@
     "sync/glue/sync_start_util.cc",
     "sync/glue/sync_start_util.h",
     "sync/profile_sync_service_factory.cc",
     "sync/profile_sync_service_factory.h",
     "sync/sessions/sync_sessions_router_tab_helper.cc",
     "sync/sessions/sync_sessions_router_tab_helper.h",
     "sync/sessions/sync_sessions_web_contents_router.cc",
     "sync/sessions/sync_sessions_web_contents_router.h",
     "sync/sessions/sync_sessions_web_contents_router_factory.cc",
     "sync/sessions/sync_sessions_web_contents_router_factory.h",
-    "sync/supervised_user_signin_manager_wrapper.cc",
-    "sync/supervised_user_signin_manager_wrapper.h",
     "sync/sync_startup_tracker.cc",
     "sync/sync_startup_tracker.h",
     "sync/user_event_service_factory.cc",
     "sync/user_event_service_factory.h",
     "tab_contents/navigation_metrics_recorder.cc",
     "tab_contents/navigation_metrics_recorder.h",
     "tab_contents/tab_util.cc",
     "tab_contents/tab_util.h",
     "task_manager/web_contents_tags.cc",
     "task_manager/web_contents_tags.h",
@@ skipping 1911 matching lines @@
       "//third_party/smhasher:murmurhash2",
     ]
 
     deps -= [ "//components/storage_monitor" ]
     if (use_seccomp_bpf) {
       deps += [ "//sandbox/linux:seccomp_bpf" ]
     }
 
     if (enable_supervised_users) {
       sources += [
+        "component_updater/supervised_user_whitelist_installer.cc",
+        "component_updater/supervised_user_whitelist_installer.h",
         "supervised_user/child_accounts/child_account_feedback_reporter_android.cc",
         "supervised_user/child_accounts/child_account_feedback_reporter_android.h",
         "supervised_user/child_accounts/child_account_service_android.cc",
         "supervised_user/child_accounts/child_account_service_android.h",
+        "sync/supervised_user_signin_manager_wrapper.cc",
+        "sync/supervised_user_signin_manager_wrapper.h",
       ]
     }
   } else {
     # Non-Android.
     sources += [
       "accessibility/invert_bubble_prefs.cc",
       "accessibility/invert_bubble_prefs.h",
       "background/background_contents.cc",
       "background/background_contents.h",
       "banners/app_banner_infobar_delegate_desktop.cc",
@@ skipping 1473 matching lines @@
       "//components/search_engines",
       "//rlz:rlz_lib",
     ]
   }
 }
 
 service_manifest("preferences_forwarder_manifest") {
   name = "preferences_forwarder"
   source = "prefs/forwarder_manifest.json"
 }