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: 919405b3 am: f25d1ab3

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

Change-Id: I2c5f843970bd949f40ede52762096155b073ce4e