459dee33df
This CL removes RouteSessionInfo#isValid() since there is are no usages. Also overrides equals() and hashCode(). Also, it applies following changes: - Make the class as final - Add javadoc for using an empty string for unknown client package name - Throw exception in Builder#build() if there is no selected routes. - Throw IllegalArgumentException in Builder#add/Remove*Routes(routeId) when the given routeId is empty or null. Tests for the class are also added. Bug: 147524068 Test: atest mediaroutertest Change-Id: I2cb6cc37a8216dd42dc72edee72bb5211259c66a