Merge "Clean up KeepForWeakReference usage" into main

import android.telephony.emergency.EmergencyNumber;

import android.util.Log;

import com.android.internal.annotations.KeepForWeakReference;

import java.util.concurrent.TimeUnit;

/**

    // The internal implementation of TelephonyManager uses WeakReference so we have to keep a

    // reference here.

    @KeepForWeakReference

    private final EmergencyCallListener mEmergencyCallListener = new EmergencyCallListener();

    private final EmergencyCallCallback mEmergencyCallCallback;