SystemShouldUpgrade 93 ash/system/tray/default_system_tray_delegate.cc bool DefaultSystemTrayDelegate::SystemShouldUpgrade() const { SystemShouldUpgrade 466 chrome/browser/ui/ash/system_tray_delegate_chromeos.cc bool SystemTrayDelegateChromeOS::SystemShouldUpgrade() const { SystemShouldUpgrade 92 chrome/browser/ui/ash/system_tray_delegate_win.cc virtual bool SystemShouldUpgrade() const OVERRIDE {