[Extensions] Create ChromeTestExtensionLoader

chrome/test/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/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 2029 matching lines @@
         }
       }
     }
 
     if (enable_extensions) {
       sources += [
         "../browser/apps/app_browsertest_util.cc",
         "../browser/apps/app_browsertest_util.h",
         "../browser/extensions/browsertest_util.cc",
         "../browser/extensions/browsertest_util.h",
-        "../browser/extensions/chrome_extension_test_notification_observer.cc",
-        "../browser/extensions/chrome_extension_test_notification_observer.h",
         "../browser/extensions/extension_apitest.cc",
         "../browser/extensions/extension_apitest.h",
         "../browser/extensions/extension_browsertest.cc",
         "../browser/extensions/extension_browsertest.h",
         "../browser/extensions/extension_function_test_utils.cc",
         "../browser/extensions/extension_function_test_utils.h",
         "../browser/extensions/updater/extension_cache_fake.cc",
         "../browser/extensions/updater/extension_cache_fake.h",
       ]
 
@@ skipping 3043 matching lines @@
       "touch_hud",
       "ui",
     ]
 
     if (is_linux && !is_android) {
       deps += [ "//components/font_service:manifest" ]
       packaged_services += [ "font_service" ]
     }
   }
 }