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 am: b4cf9f5f

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

Change-Id: Iea29e09d1635e734b7002019d835e17709e365fc