ash: Use SessionController instead of SessionStateDelegate

ash/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("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 
 # Historical note: Ash shipped on Windows for a couple years to support
@@ skipping 115 matching lines @@
     "common/mojo_interface_factory.h",
     "common/multi_profile_uma.cc",
     "common/multi_profile_uma.h",
     "common/new_window_controller.cc",
     "common/new_window_controller.h",
     "common/palette_delegate.h",
     "common/scoped_root_window_for_new_windows.cc",
     "common/scoped_root_window_for_new_windows.h",
     "common/session/session_controller.cc",
     "common/session/session_controller.h",
-    "common/session/session_state_delegate.cc",
     "common/session/session_state_delegate.h",
     "common/session/session_state_observer.cc",
     "common/session/session_state_observer.h",
     "common/shelf/app_list_button.cc",
     "common/shelf/app_list_button.h",
     "common/shelf/app_list_shelf_item_delegate.cc",
     "common/shelf/app_list_shelf_item_delegate.h",
     "common/shelf/ink_drop_button_listener.h",
     "common/shelf/overflow_bubble.cc",
     "common/shelf/overflow_bubble.h",
@@ skipping 843 matching lines @@
   testonly = true
   sources = [
     "../ui/views/test/test_views_delegate_aura.cc",
     "shell/app_list.cc",
     "shell/bubble.cc",
     "shell/context_menu.cc",
     "shell/context_menu.h",
     "shell/example_app_list_presenter.cc",
     "shell/example_app_list_presenter.h",
     "shell/example_factory.h",
+    "shell/example_session_controller_client.cc",
+    "shell/example_session_controller_client.h",
     "shell/lock_view.cc",
     "shell/panel_window.cc",
     "shell/panel_window.h",
     "shell/shell_delegate_impl.cc",
     "shell/shell_delegate_impl.h",
     "shell/toplevel_window.cc",
     "shell/toplevel_window.h",
     "shell/widgets.cc",
     "shell/window_watcher.cc",
     "shell/window_watcher.h",
@@ skipping 493 matching lines @@
     "//content/public/app:both",
     "//device/bluetooth",
   ]
 
   data_deps = [
     "//ash/strings:ash_test_strings",
     "//ash/resources:ash_test_resources_with_content_100_percent",
     "//ash/resources:ash_test_resources_200_percent",
   ]
 }