Add support for ServiceFlow_ContentsType

We need ServiceFlow_ContentsType to determine how to use the user data.

Test: atest SlicePurchaseControllerTest
Test: manual test userdata is properly handled based on contents type
Bug: 282905562
Change-Id: Ibd55131e39177f6e3215c8ae5e14fae4952896d0
Merged-In: Ibd55131e39177f6e3215c8ae5e14fae4952896d0
3 files changed