[LSC] Add LOCAL_LICENSE_KINDS to packages/apps/ThemePicker

Added SPDX-license-identifier-Apache-2.0 to:
  robolectric_tests/Android.mk

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I06c5466a8461b7a0f503eb5b9b9c0afc4a41a12e
1 file changed