merge_pr_46959

text-box-trim: add tests for text-emphasis

Bug: 40254880
Change-Id: I5dcc6bf1c91c66aa4dd1f3e5a8ea5a1719341454
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5632630
Commit-Queue: Lingqi Chi lingqi@chromium.org
Reviewed-by: Koji Ishii kojii@chromium.org
Cr-Commit-Position: refs/heads/main@{#1322012}