mus: Allow the WM to specify the windows that can have active children.

components/mus/ws/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/ui.gni")
 import("//testing/test.gni")
 import("//mojo/public/mojo_application.gni")
 
 source_set("lib") {
   sources = [
     "access_policy.h",
     "access_policy_delegate.h",
     "client_connection.cc",
     "client_connection.h",
     "connection_manager.cc",
     "connection_manager.h",
     "connection_manager_delegate.cc",
     "connection_manager_delegate.h",
     "default_access_policy.cc",
     "default_access_policy.h",
     "display_manager.cc",
     "display_manager.h",
     "display_manager_delegate.h",
     "display_manager_factory.h",
     "event_dispatcher.cc",
     "event_dispatcher.h",
     "event_dispatcher_delegate.h",
     "focus_controller.cc",
     "focus_controller.h",
+    "focus_controller_delegate.h",
     "focus_controller_observer.h",
     "forwarding_window_manager.cc",
     "forwarding_window_manager.h",
     "operation.cc",
     "operation.h",
     "server_window.cc",
     "server_window.h",
     "server_window_delegate.h",
     "server_window_drawn_tracker.cc",
     "server_window_drawn_tracker.h",
@@ skipping 140 matching lines @@
     "//ui/gfx:test_support",
     "//ui/gfx/geometry",
     "//ui/mojo/geometry:interfaces",
     "//ui/mojo/geometry:util",
   ]
 
   data_deps = [
     ":lib",
   ]
 }