tree 5cdc4b28b67f60853f2f7da0710a9221e8196b2b
parent 3603385896ff808aeb60dcfe4616c630cbfb52be
author Jaewan Kim <jaewan@google.com> 1577082913 +0900
committer Jaewan Kim <jaewan@google.com> 1577434283 +0900

MediaSessionRecord: Clean up codes

This includes following changes
- Remove unused public methods.
- Change the public method signatures not to share internal members
  when it's unncessary.

This is the initial step towards handling media key events via Media2.

Bug: TBD
Test: Build and flash manually
Change-Id: I4140abf26a1ccbc215a9a80ae0ff7636ae5fd698