DO NOT MERGE Define Network notification proto constants.

    // OS: N-MR2

    ACTION_LOCK_BECAUSE_SIM_REMOVED = 497;

    // ACTION: A captive portal was detected during network validation

    // CATEGORY: NOTIFICATION

    // OS: N-MR2

    NOTIFICATION_NETWORK_SIGN_IN = 740;

    // ACTION: An unvalidated network without Internet was selected by the user

    // CATEGORY: NOTIFICATION

    // OS: N-MR2

    NOTIFICATION_NETWORK_NO_INTERNET = 741;

    // ACTION: A validated network failed revalidation and lost Internet access

    // CATEGORY: NOTIFICATION

    // OS: N-MR2

    NOTIFICATION_NETWORK_LOST_INTERNET = 742;

    // ACTION: The system default network switched to a different network

    // CATEGORY: NOTIFICATION

    // OS: N-MR2

    NOTIFICATION_NETWORK_SWITCH = 743;

    // ---- End N-MR2 Constants, all N-MR2 constants go above this line ----

    // Add new aosp constants above this line.