DO NOT MERGE Expose TitleBar so that elevation can be adjusted

Elevation is used to render a drop shadow, so also had to add a
background color to the titlebar to allow for proper rendering.

Bug: 79582906
Test: ran local tests
Change-Id: Iee5ab384b41ad3a46528a7a692d51e6558382e23
5 files changed
tree: 944b40efd8fbe5283359bcc4cfbe64fa2e914ab1
  1. library/
  2. PREUPLOAD.cfg