Merge "Null-check the desaturating view, it might be gone." into rvc-dev am:...

Merge "Null-check the desaturating view, it might be gone." into rvc-dev am: b19c92dc am: b40378b0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11708789

Change-Id: Ia08514600dcd78eec1c847dce4d296ef23e8de44