[subresource_filter] Add metrics for UI / related things

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 1257 matching lines @@
     "status_icons/status_icon_menu_model.h",
     "status_icons/status_icon_observer.h",
     "status_icons/status_tray.cc",
     "status_icons/status_tray.h",
     "storage/durable_storage_permission_context.cc",
     "storage/durable_storage_permission_context.h",
     "storage/storage_info_fetcher.cc",
     "storage/storage_info_fetcher.h",
     "subresource_filter/chrome_subresource_filter_client.cc",
     "subresource_filter/chrome_subresource_filter_client.h",
+    "subresource_filter/subresource_filter_content_settings_observer_factory.cc",
+    "subresource_filter/subresource_filter_content_settings_observer_factory.h",
     "sync/chrome_sync_client.cc",
     "sync/chrome_sync_client.h",
     "sync/glue/extensions_activity_monitor.cc",
     "sync/glue/extensions_activity_monitor.h",
     "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",
@@ skipping 3331 matching lines @@
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }
 
 service_manifest("preferences_manifest") {
   name = "preferences"
   source = "prefs/preferences_manifest.json"
 }