Move public static methods from DataUsageSummary to DataUsageBase. Bug: 62349208 Test: make RunSettingsRoboTests -j40 Change-Id: I632f75f4c4f370fb225a9787267043fec20994e5
Move public static methods from DataUsageSummary to DataUsageBase. Bug: 62349208 Test: make RunSettingsRoboTests -j40 Change-Id: I632f75f4c4f370fb225a9787267043fec20994e5