GitLab

AXObjectCacheImpl::GetOrCreate(LayoutObject*) can return a nullptr
if the node is an area element.

This change makes sure that the AXObject is valid before
calling |IsAnchor|.

Bug: 996460
Change-Id: I63b966615aec010c6df03292addbcd0a71e405ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1772283Reviewed-by: Kevin Babbitt <kbabbitt@microsoft.com>
Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
Commit-Queue: Adam Ettenberger <adettenb@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#691888}