Avoiding double resize of maximized windows upon user switch due to showing and hiding of the shelf

chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h

Index: chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h
diff --git a/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h b/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h
index 1ea403087b644f5453a4e9bca5717b772c4ff8f5..c54397c56b866c8e805dafb30a61e75d5a5e4b4e 100644
--- a/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h
+++ b/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h
@@ -84,8 +84,9 @@ class UserSwichAnimatorChromeOS {
   void TransitionWindows(AnimationStep animation_step);
 
   // Check if a window is maximized / fullscreen / covering the entire screen.
-  // TODO(skuhne): We might want to do this on a per screen basis.
-  TransitioningScreenCover GetScreenCover();
+  // If a |root_window| is given, the screen coverage of that root_window is
+  // tested, otherwise all screens.
+  TransitioningScreenCover GetScreenCover(aura::Window* root_window);
 
   // The owning window manager.
   MultiUserWindowManagerChromeOS* owner_;