Remove the old Web Notification code-path (Chromium)

content/renderer/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/features.gni")
 import("//build/config/ui.gni")
 import("//content/renderer/renderer.gni")
 import("//media/media_options.gni")
 
 source_set("renderer") {
@@ skipping 44 matching lines @@
     "//ui/base",
     "//ui/events:events_base",
     "//ui/events:dom4_keycode_converter",
     "//ui/gl",
     "//ui/native_theme",
     "//ui/surface",
     "//v8",
     "//webkit/common/gpu",
   ]
 
-  if (!enable_notifications) {
-    sources -= [
-      "notification_provider.cc",
-      "active_notification_tracker.cc",
-    ]
-  }
-
   if (is_mac) {
     sources -= [
       "webscrollbarbehavior_impl_gtkoraura.cc",
       "webscrollbarbehavior_impl_gtkoraura.h",
     ]
     sources += [
       "external_popup_menu.cc",
       "external_popup_menu.h",
     ]
   }
@@ skipping 108 matching lines @@
 
   if (enable_browser_cdms) {
     sources += [
       "media/crypto/proxy_media_keys.cc",
       "media/crypto/proxy_media_keys.h",
       "media/crypto/renderer_cdm_manager.cc",
       "media/crypto/renderer_cdm_manager.h",
     ]
   }
 }