Condition added to prevent lock animation on Supervised User creation.

ash/wm/power_button_controller.cc

Index: ash/wm/power_button_controller.cc
diff --git a/ash/wm/power_button_controller.cc b/ash/wm/power_button_controller.cc
index 5a26a83cbf113911fd4fb23d6733e46ff880835d..5f2b932f2da2632e64d4187a0f0cbda3283d5b44 100644
--- a/ash/wm/power_button_controller.cc
+++ b/ash/wm/power_button_controller.cc
@@ -92,7 +92,8 @@ void PowerButtonController::OnPowerButtonEvent(
         return;
 
       if (session_state_delegate->CanLockScreen() &&
-          !session_state_delegate->IsScreenLocked()) {
+          !session_state_delegate->IsScreenLocked() &&

[dzhioev (left Google), 2014/12/23 14:08:52]

IsScreenLocked() implies IsUserSessionBlocked(), so you can drop
!IsScreenLocked() condition.

+          !session_state_delegate->IsUserSessionBlocked()) {
         if (Shell::GetInstance()->maximize_mode_controller()->
             IsMaximizeModeWindowManagerEnabled() && enable_quick_lock_)
           controller_->StartLockAnimationAndLockImmediately(true);