Prevent sharesheet from previewing unowned URIs [RESTRICT AUTOMERGE] am: cef32a8b8a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21534012

Change-Id: Idfa07a3f07ed2d3c3203b8855553b69dc3297ffb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>