Hide cursor upon lock animation

ash/wm/session_state_controller_impl2.cc

 // Copyright (c) 2012 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/wm/session_state_controller_impl2.h"
 
 #include "ash/ash_switches.h"
 #include "ash/cancel_mode.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
@@ skipping 245 matching lines @@
   if (!CanCancelShutdownAnimation())
     return;
   if (lock_to_shutdown_timer_.IsRunning()) {
     lock_to_shutdown_timer_.Stop();
     return;
   }
   if (shutdown_after_lock_) {
     shutdown_after_lock_ = false;
     return;
   }
+
   animator_->StartGlobalAnimation(
       internal::SessionStateAnimator::ANIMATION_UNDO_GRAYSCALE_BRIGHTNESS,
       internal::SessionStateAnimator::ANIMATION_SPEED_REVERT_SHUTDOWN);
   pre_shutdown_timer_.Stop();
 }
 
 void SessionStateControllerImpl2::RequestShutdown() {
   if (!shutting_down_)
     RequestShutdownImpl();
 }
@@ skipping 28 matching lines @@
       base::TimeDelta::FromMilliseconds(kLockToShutdownTimeoutMs),
       this, &SessionStateControllerImpl2::OnLockToShutdownTimeout);
 }
 
 void SessionStateControllerImpl2::OnLockToShutdownTimeout() {
   DCHECK(system_is_locked_);
   StartCancellableShutdownAnimation();
 }
 
 void SessionStateControllerImpl2::StartCancellableShutdownAnimation() {
+  Shell* shell = ash::Shell::GetInstance();
+  // Hide cursor, but let it reappear if the mouse moves.
+  shell->env_filter()->set_cursor_hidden_by_filter(true);
+  shell->cursor_manager()->HideCursor();
+
   animator_->StartGlobalAnimation(
       internal::SessionStateAnimator::ANIMATION_GRAYSCALE_BRIGHTNESS,
       internal::SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
   StartPreShutdownAnimationTimer();
 }
 
 void SessionStateControllerImpl2::StartShutdownAnimationImpl() {
   animator_->StartGlobalAnimation(
       internal::SessionStateAnimator::ANIMATION_GRAYSCALE_BRIGHTNESS,
       internal::SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
@@ skipping 305 matching lines @@
       unlocked_properties_->background_is_hidden) {
     animator_->StartAnimationWithObserver(
         internal::SessionStateAnimator::DESKTOP_BACKGROUND,
         internal::SessionStateAnimator::ANIMATION_FADE_OUT,
         speed,
         observer);
   }
 }
 
 }  // namespace ash