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Use DumpWithoutCrashing() to get reports for problematic content.
Also, add information to the crash reports about objects that are
involved, and include information about commonly problematic properties.

Note: DumpWithoutCrashing() once added to AXTreeSerializer once before
but was reverted due to too many reports.

AX-RelNotes: n/a
Bug: None
Change-Id: Iac5f0ba377e03881efdb6734a954fbb9f1f3125c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2480624
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Daniel Libby <dlibby@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#819640}