     case signsInFxa = "E_User_Signed_In_To_FxA"
     case useReaderView = "E_User_Used_Reader_View"
     case trackingProtectionSettings = "E_Tracking_Protection_Settings_Changed"
+    case fxaSyncedNewDevice = "E_FXA_Synced_New_Device"
 }
 
 struct LPAttributeKey {

            LPAttributeKey.focusInstalled: focusInstalled(),
            LPAttributeKey.klarInstalled: klarInstalled(),
            LPAttributeKey.pocketInstalled: pocketInstalled(),
            LPAttributeKey.signedInSync: profile?.hasAccount() ?? false
        ]
        
        self.setupCustomTemplates()

    static let mailtoIsDefault = "Mailto Is Default"
    static let pocketInstalled = "Pocket Installed"
    static let telemetryOptIn = "Telemetry Opt In"
    static let fxaAccountVerified = "FxA account is verified"
    static let fxaDeviceCount = "Number of devices in FxA account"
}

struct MozillaAppSchemes {
