Add {Lock,Unlock,Show,Hide}Cursor() to the window manager mojom.

ash/mus/bridge/shell_port_mash.cc

 // Copyright 2016 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.
 
 #include "ash/mus/bridge/shell_port_mash.h"
 
 #include <utility>
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_controller_delegate_aura.h"
@@ skipping 224 matching lines @@
   if (GetAshConfig() == Config::MUS) {
     Shell::Get()
         ->window_tree_host_manager()
         ->UpdateWorkAreaOfDisplayNearestWindow(window->aura_window(), insets);
     return;
   }
   window_manager_->screen()->SetWorkAreaInsets(window->aura_window(), insets);
 }
 
 void ShellPortMash::LockCursor() {
-  // TODO: http://crbug.com/637853
-  NOTIMPLEMENTED();
+  window_manager_->window_manager_client()->LockCursor();
 }
 
 void ShellPortMash::UnlockCursor() {
-  // TODO: http://crbug.com/637853
-  NOTIMPLEMENTED();
+  window_manager_->window_manager_client()->UnlockCursor();
+}
+
+void ShellPortMash::ShowCursor() {
+  window_manager_->window_manager_client()->ShowCursor();
+}
+
+void ShellPortMash::HideCursor() {
+  window_manager_->window_manager_client()->HideCursor();
+}
+
+void ShellPortMash::SetGlobalOverrideCursor(
+    base::Optional<ui::CursorData> cursor) {
+  window_manager_->window_manager_client()->SetGlobalOverrideCursor(
+      std::move(cursor));
 }
 
 bool ShellPortMash::IsMouseEventsEnabled() {
   // TODO: http://crbug.com/637853
   NOTIMPLEMENTED();
   return true;
 }
 
 std::vector<WmWindow*> ShellPortMash::GetAllRootWindows() {
   if (GetAshConfig() == Config::MUS) {
@@ skipping 303 matching lines @@
   mash_state_->accelerator_controller_registrar =
       base ::MakeUnique<AcceleratorControllerRegistrar>(
           window_manager_, accelerator_namespace_id);
   return base::MakeUnique<AcceleratorController>(
       mash_state_->accelerator_controller_delegate.get(),
       mash_state_->accelerator_controller_registrar.get());
 }
 
 }  // namespace mus
 }  // namespace ash