#crashfix: Check CheckApiIsSupported() before de-ref-ing j_api_handler_

Also required dropping const from GetSafetyNetId()

R=drubery

Bug: 940345,907280
Change-Id: I8718b07e35d8e90f76053d493459a62b6e90d00c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1526633
Commit-Queue: Varun Khaneja <vakh@chromium.org>
Reviewed-by: Daniel Rubery <drubery@chromium.org>
Auto-Submit: Varun Khaneja <vakh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641368}
4 files changed