tree 38cf4fd9cf091c36368bd2c699a31f0a330166c9
parent 7bdf98eb6b21cb959784acda152b7cb518803855
author Kyunglyul Hyun <klhyun@google.com> 1570684184 +0900
committer Kyunglyul Hyun <klhyun@google.com> 1570779816 +0900

MediaRouter: add volume control functionality into MR2

Add requestSetVolume and requestUpdateVolume into
MediaRouter2 and MediaRouter2Manager to enable users to control volume
of routes.

This CL also includes test cleanup for readability.

Bug: 142298160
Test: atest mediaroutertest
Change-Id: Iebb396c921517ec1a7677f90baa119ab647b5689