Moves ash::user::LoginStatus to ash/common

ash/system/user/user_card_view.h

Index: ash/system/user/user_card_view.h
diff --git a/ash/system/user/user_card_view.h b/ash/system/user/user_card_view.h
index 130558d1600c54117aea80467d29871b3950f404..e12f786dd34178ec1ecc7fa631b56b89056d050d 100644
--- a/ash/system/user/user_card_view.h
+++ b/ash/system/user/user_card_view.h
@@ -17,7 +17,7 @@ namespace tray {
 class UserCardView : public views::View {
  public:
   // |max_width| takes effect only if |login_status| is LOGGED_IN_PUBLIC.
-  UserCardView(user::LoginStatus login_status, int max_width, int user_index);
+  UserCardView(LoginStatus login_status, int max_width, int user_index);
   ~UserCardView() override;
 
   // views::View overrides.
@@ -27,10 +27,10 @@ class UserCardView : public views::View {
   // Creates the content for the public mode.
   void AddPublicModeUserContent(int max_width);
 
-  void AddUserContent(user::LoginStatus login_status, int user_index);
+  void AddUserContent(LoginStatus login_status, int user_index);
 
   // Create a user icon representation.
-  views::View* CreateIcon(user::LoginStatus login_status, int user_index);
+  views::View* CreateIcon(LoginStatus login_status, int user_index);
 
   DISALLOW_COPY_AND_ASSIGN(UserCardView);
 };