RouteSessionInfo: Remove isValid() and override equals()/hashCode()
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
5 files changed