Merge "Guarding against null pointer exception when setting view structure...

Merge "Guarding against null pointer exception when setting view structure info for content capture" into sc-dev am: 59fe064d am: 2e8b06aa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15067633

Change-Id: I41642583099cfc4dd252e8b411755247998f6b98