Merge "Sharesheet: be more defensive about un-unparcelable intents." into...

Merge "Sharesheet: be more defensive about un-unparcelable intents." into sc-dev am: a1d1a382 am: ddbade40

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15374840

Change-Id: I3f542d0d7548543331fd05a704542df7b563a0b0