Triage first-letter-digraph.html

Bug: 1172333
Change-Id: I0bc903411ecb4b64d96aee575f7620df4458a199
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2662982


Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Dominik Röttsches <drott@chromium.org>
Cr-Commit-Position: refs/heads/master@{#849092}