Remove deprecated extension notification from shortcuts_extensions_manager.h/cc

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 66 matching lines @@
     "autocomplete/autocomplete_classifier_factory.cc",
     "autocomplete/autocomplete_classifier_factory.h",
     "autocomplete/chrome_autocomplete_provider_client.cc",
     "autocomplete/chrome_autocomplete_provider_client.h",
     "autocomplete/chrome_autocomplete_scheme_classifier.cc",
     "autocomplete/chrome_autocomplete_scheme_classifier.h",
     "autocomplete/in_memory_url_index_factory.cc",
     "autocomplete/in_memory_url_index_factory.h",
     "autocomplete/shortcuts_backend_factory.cc",
     "autocomplete/shortcuts_backend_factory.h",
-    "autocomplete/shortcuts_extensions_manager.cc",
-    "autocomplete/shortcuts_extensions_manager.h",
     "autofill/personal_data_manager_factory.cc",
     "autofill/personal_data_manager_factory.h",
     "autofill/risk_util.cc",
     "autofill/risk_util.h",
     "autofill/validation_rules_storage_factory.cc",
     "autofill/validation_rules_storage_factory.h",
     "background_sync/background_sync_controller_factory.cc",
     "background_sync/background_sync_controller_factory.h",
     "background_sync/background_sync_controller_impl.cc",
     "background_sync/background_sync_controller_impl.h",
@@ skipping 1607 matching lines @@
   }
 
   if (enable_extensions) {
     sources += [
       "accessibility/accessibility_extension_api.cc",
       "accessibility/accessibility_extension_api.h",
       "accessibility/animation_policy_prefs.cc",
       "accessibility/animation_policy_prefs.h",
       "autocomplete/keyword_extensions_delegate_impl.cc",
       "autocomplete/keyword_extensions_delegate_impl.h",
+      "autocomplete/shortcuts_extensions_manager.cc",
+      "autocomplete/shortcuts_extensions_manager.h",
       "browsing_data/hosted_apps_counter.cc",
       "browsing_data/hosted_apps_counter.h",
       "content_settings/content_settings_internal_extension_provider.cc",
       "content_settings/content_settings_internal_extension_provider.h",
       "drive/drive_notification_manager_factory.cc",
       "drive/drive_notification_manager_factory.h",
       "guest_view/app_view/chrome_app_view_guest_delegate.cc",
       "guest_view/app_view/chrome_app_view_guest_delegate.h",
       "guest_view/chrome_guest_view_manager_delegate.cc",
       "guest_view/chrome_guest_view_manager_delegate.h",
@@ skipping 2906 matching lines @@
 
 service_manifest("preferences_manifest") {
   name = "preferences"
   source = "prefs/preferences_manifest.json"
 }
 
 service_manifest("preferences_forwarder_manifest") {
   name = "preferences_forwarder"
   source = "prefs/forwarder_manifest.json"
 }