Migrate CtsWindowManagerDeviceTestCases from mk => bp

I needed to add a shared library between the helper app and the test and
noticed the default behavior in the mk rule is to not merge manifests.
Android.bp files do that by default, so I decided to migrate to bp.

I didn't see any reason blocking the migration, so if there is one
please let me know. Used androidmk converter and adapted some srcs to
use the proper filegroups.

Test: Check TH runs CtsWindowManagerDeviceTestCases
Change-Id: Ifcf88a2ddf2462c684ac753f2355d7360cef3e01
2 files changed