Merge "Tracking launch activity to decide next splash screen style." into...

Merge "Tracking launch activity to decide next splash screen style." into sc-dev am: 9e14f714 am: e6d106c3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14326844

Change-Id: I6a7a07a5b2285549a382f6f13f2341a352120b6e