Revert "Crash early if FindFamily DWriteFontProxy call fails"

This reverts commit 59cc57db11dbcfb8ff8bedea12db458fc7662067.

Reason for revert: We've got enough data from this CHECK. From the
stack, it is possible that renderer can continue the work if we
don't crash here.

Original change's description:
> Crash early if FindFamily DWriteFontProxy call fails
>
> Adding an assertion failure on a failed FindFamily DWriteFontProxy sync
> IPC call to gather more information on failing clients. Sync IPC calls
> should only be returning false in very rare cases, which would mean an
> error here. More discussion on this on the bug.
>
> Note to Crash reporting sheriffs: This will likely trigger
> additional crash reports, which we assume to be a subset of the
> crash reports collected for issue 561873.
>
> Bug: 922403
> Change-Id: I054e65e5f01ff646329a6174b908305519fef3d6
> Reviewed-on: https://chromium-review.googlesource.com/c/1412029
> Reviewed-by: Ken Rockot <rockot@google.com>
> Commit-Queue: Dominik Röttsches <drott@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#625672}

# Not skipping CQ checks because original CL landed > 1 day ago.

TBR=rockot@google.com, drott@chromium.org

Bug: 922403, 928649
Change-Id: Ia2ae9be045d2a8680f1cceba6ed504d8ea7f0e1e
Reviewed-on: https://chromium-review.googlesource.com/c/1466432
Reviewed-by: Emil A Eklund <eae@chromium.org>
Commit-Queue: Emil A Eklund <eae@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#631280}
1 file changed