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

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

Change-Id: I0aedd4c93b572c07dbf80ab67f9f47d0c2c668a4