Move more from WmShell to Shell

ash/common/system/user/user_view.cc

Index: ash/common/system/user/user_view.cc
diff --git a/ash/common/system/user/user_view.cc b/ash/common/system/user/user_view.cc
index a21dff09c2eef865eb59bd8f5243ec9ee1f2f9c4..1149acae8534481f0ae46f72f0e379126a84af17 100644
--- a/ash/common/system/user/user_view.cc
+++ b/ash/common/system/user/user_view.cc
@@ -263,7 +263,7 @@ void UserView::ButtonPressed(views::Button* sender, const ui::Event& event) {
   if (sender == logout_button_) {
     WmShell::Get()->RecordUserMetricsAction(UMA_STATUS_AREA_SIGN_OUT);
     RemoveAddUserMenuOption();
-    WmShell::Get()->system_tray_controller()->SignOut();
+    Shell::Get()->system_tray_controller()->SignOut();
   } else if (sender == user_card_view_ &&
              IsMultiProfileSupportedAndUserActive()) {
     if (IsActiveUser()) {
@@ -280,7 +280,7 @@ void UserView::ButtonPressed(views::Button* sender, const ui::Event& event) {
     RemoveAddUserMenuOption();
     // Let the user add another account to the session.
     MultiProfileUMA::RecordSigninUser(MultiProfileUMA::SIGNIN_USER_BY_TRAY);
-    WmShell::Get()->system_tray_delegate()->ShowUserLogin();
+    Shell::Get()->system_tray_delegate()->ShowUserLogin();
     owner_->system_tray()->CloseSystemBubble();
   } else {
     NOTREACHED();