Merge "Use ArraySet in stead of ArrayList to cache the network request"

import android.telephony.Annotation.ApnType;

import android.telephony.data.ApnSetting;

import android.text.TextUtils;

import android.util.ArraySet;

import android.util.LocalLog;

import android.util.SparseIntArray;

    }

    private final LocalLog mLocalLog = new LocalLog(150);

    private final ArrayList<NetworkRequest> mNetworkRequests = new ArrayList<>();

    private final ArraySet<NetworkRequest> mNetworkRequests = new ArraySet<>();

    private final LocalLog mStateLocalLog = new LocalLog(50);

    public void requestLog(String str) {