arc: Prevent showing Arc app window for secondary user profile.

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

Index: chrome/browser/ui/ash/multi_user/multi_user_window_manager.h
diff --git a/chrome/browser/ui/ash/multi_user/multi_user_window_manager.h b/chrome/browser/ui/ash/multi_user/multi_user_window_manager.h
index cf77aaa240efbe16146f00fb4f10f1b69f963864..505ef3516d682f3c88fe57c9ba58577a7ca20a8e 100644
--- a/chrome/browser/ui/ash/multi_user/multi_user_window_manager.h
+++ b/chrome/browser/ui/ash/multi_user/multi_user_window_manager.h
@@ -102,6 +102,9 @@ class MultiUserWindowManager {
   virtual void SetWindowOwner(aura::Window* window,
                               const AccountId& account_id) = 0;
 
+  // Marks the window as visible in the system.
+  virtual void MarkWindowAsVisible(aura::Window* window) = 0;
+
   // See who owns this window. The return value is the user account id or an
   // empty AccountId if not assigned yet.
   virtual const AccountId& GetWindowOwner(aura::Window* window) const = 0;