Move Compat specific MediaBrowserCompat logic to ImplBase class

Move logic specific to connecting to a MediaBrowserServiceCompat
from the base MediaBrowserCompat to a static innner class
MediaBrowserImplBase. No functional changes.

BUG: 22917960
Change-Id: I8160629f356e3e8173cd2424fa2eaed82cbb7963
1 file changed