Initial layout of selection toolbar for render service part.

The initial selection toolbar render service part architecture. The
implementation will be done in the follow up changes.

Bug: 190030331
Bug: 205822301
Test: manual. Call API and can bind service successfully.
Ignore-AOSP-First: new feature for T.

Change-Id: I3a5d3802c2afca432f137742cfd6a1e0045ed975