Splits window manager like methods into ViewManagerServiceDelegate

mojo/services/view_manager/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")
 
 # GYP version: mojo/mojo_services.gypi:mojo_view_manager
 shared_library("view_manager") {
   output_name = "mojo_view_manager"
 
@@ skipping 36 matching lines @@
     "display_manager.h",
     "main.cc",
     "server_view.cc",
     "server_view.h",
     "server_view_delegate.h",
     "view_manager_export.h",
     "view_manager_init_service_context.cc",
     "view_manager_init_service_context.h",
     "view_manager_init_service_impl.cc",
     "view_manager_init_service_impl.h",
+    "view_manager_service_delegate_client_impl.cc",
+    "view_manager_service_delegate_client_impl.h",
     "view_manager_service_impl.cc",
     "view_manager_service_impl.h",
     "window_manager_access_policy.cc",
     "window_manager_access_policy.h",
   ]
 }
 
 # GYP version: mojo/mojo_services.gypi:mojo_view_manager_unittests
 test("mojo_view_manager_unittests") {
   deps = [
@@ skipping 20 matching lines @@
   if (is_component_build) {
     deps += ["//ui/gl"]
   }
 
   sources = [
     "test_change_tracker.cc",
     "test_change_tracker.h",
     "view_manager_unittest.cc",
   ]
 }