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When in quirks mode and there are no text siblings; e.g.:
  <div><img><span>text</span></div>
and 'vertical-align: text-top' applied to <img> hits
DCHECK failure and results in incorrect position.

The test ensures that results are the same with the standard
mode.

Bug: 901123
Change-Id: I30564c66d5847f09caf3672ba3d456c0eb798d3e
Reviewed-on: https://chromium-review.googlesource.com/c/1320529
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Emil A Eklund <eae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605965}