Merge "Support to start tasks into split screen with specific split ratio"...

Merge "Support to start tasks into split screen with specific split ratio" into sc-v2-dev am: 488d986c am: 6977b7fe

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16331279

Change-Id: Ic149b0830d33a16b632e2b28c53aa8b29a7d205f