Merge "Factor native ranks provided by apps into shortcut targets ranking....

Merge "Factor native ranks provided by apps into shortcut targets ranking. This would help rank shortcuts targets properly when there is no enough sharing history on them." into rvc-dev am: d5fe3bf3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11827741

Change-Id: I7e58a8b153628e3189c7052bfa7520f6b432353d