Remove auto raw pointer deduction from non-linux specific code.

ash/common/system/tray/tray_details_view.cc

Index: ash/common/system/tray/tray_details_view.cc
diff --git a/ash/common/system/tray/tray_details_view.cc b/ash/common/system/tray/tray_details_view.cc
index 905a5a8e62fb0e42b74d28f19f55fd096abfcaa3..e10110c20cd70b75b0f8de4d1a740830ac6b6fe6 100644
--- a/ash/common/system/tray/tray_details_view.cc
+++ b/ash/common/system/tray/tray_details_view.cc
@@ -329,7 +329,7 @@ void TrayDetailsView::CreateTitleRow(int string_id) {
     tri_view_->AddView(TriView::Container::START, back_button_);
 
     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-    auto label = TrayPopupUtils::CreateDefaultLabel();
+    auto* label = TrayPopupUtils::CreateDefaultLabel();
     label->SetText(rb.GetLocalizedString(string_id));
     TrayPopupItemStyle style(TrayPopupItemStyle::FontStyle::TITLE);
     style.SetupLabel(label);