tree 7f8a53c6bdeca5fedf1c8fc2ec15cbc779a42129
parent 629decfd8a26b5ca8a156330df475fb8d4b81156
author Hyundo Moon <hdmoon@google.com> 1498561577 +0900
committer Hyundo Moon <hdmoon@google.com> 1498640628 +0900

MediaBrowserCompat: Fix NPE when CustomActionCallback is null

CustomActionCallback can be null when calling
MediaBrowserCompat.sendCustomAction(), but current implementation just
calls the callback without null check.

Test: Passed MediaBrowserCompatTest in API 26
Change-Id: Ic6ff329c1a3f80b79593221d8f7ab93bde3be614