Unload old Cast extensions after initializing ToolbarActionsModel

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 3678 matching lines @@
       "../browser/ui/tabs/pinned_tab_codec_unittest.cc",
       "../browser/ui/tabs/pinned_tab_service_unittest.cc",
       "../browser/ui/tabs/pinned_tab_test_utils.cc",
       "../browser/ui/tabs/tab_menu_model_unittest.cc",
       "../browser/ui/tabs/tab_strip_model_stats_recorder_unittest.cc",
       "../browser/ui/tabs/tab_strip_model_unittest.cc",
       "../browser/ui/tabs/test_tab_strip_model_delegate.cc",
       "../browser/ui/tabs/test_tab_strip_model_delegate.h",
       "../browser/ui/toolbar/app_menu_model_unittest.cc",
       "../browser/ui/toolbar/back_forward_menu_model_unittest.cc",
+      "../browser/ui/toolbar/component_toolbar_actions_factory_unittest.cc",
       "../browser/ui/toolbar/mock_component_toolbar_actions_factory.cc",
       "../browser/ui/toolbar/mock_component_toolbar_actions_factory.h",
       "../browser/ui/toolbar/mock_media_router_action_controller.cc",
       "../browser/ui/toolbar/mock_media_router_action_controller.h",
       "../browser/ui/toolbar/recent_tabs_builder_test_helper.cc",
       "../browser/ui/toolbar/recent_tabs_builder_test_helper.h",
       "../browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc",
       "../browser/ui/toolbar/test_toolbar_actions_bar_bubble_delegate.cc",
       "../browser/ui/toolbar/test_toolbar_actions_bar_bubble_delegate.h",
       "../browser/ui/toolbar/toolbar_actions_bar_unittest.cc",
@@ skipping 1463 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }