Merge "Make getNetworkSpecifier() public API."

  public class NetworkRequest implements android.os.Parcelable {

    method public int describeContents();

    method @Nullable public android.net.NetworkSpecifier getNetworkSpecifier();

    method public boolean hasCapability(int);

    method public boolean hasTransport(int);

    method public void writeToParcel(android.os.Parcel, int);

package android.net;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.annotation.RequiresPermission;

import android.annotation.SystemApi;

import android.annotation.UnsupportedAppUsage;

        return networkCapabilities.hasTransport(transportType);

    }

    /**

     * @see Builder#setNetworkSpecifier(NetworkSpecifier)

     */

    @Nullable

    public NetworkSpecifier getNetworkSpecifier() {

        return networkCapabilities.getNetworkSpecifier();

    }

    public String toString() {

        return "NetworkRequest [ " + type + " id=" + requestId +

                (legacyType != ConnectivityManager.TYPE_NONE ? ", legacyType=" + legacyType : "") +