Merge "Add toString in NetworkFactory." into lmp-mr1-dev

    protected void log(String s) {

        Log.d(LOG_TAG, s);

    }

    @Override

    public String toString() {

        StringBuilder sb = new StringBuilder("{").append(LOG_TAG).append(" - ScoreFilter=").

                append(mScore).append(", Filter=").append(mCapabilityFilter).append(", requests=").

                append(mNetworkRequests.size()).append("}");

        return sb.toString();

    }

}