[text-box-trim] Fix two block-in-inline in a row
When the first formatted line is inside of a block-in-inline,
IsBlockStartTrimmed needs to be propagated from the block.
When normal inline follows, the propagation isn't necessary
because the algorithm checks IsFirstFormattedLine(), but the
issue appears when a block-in-inline follows it. The test for
followed by normal inline is in:
text-box-trim-block-in-inline-start-001.
Tests for end will be in following patches.
All changes are under a runtime flag enabled only for testing.
Bug: 40254880
Change-Id: I5f053d5999d98378ef4b39cacec2d6923aa1d8c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5591191
Reviewed-by: Lingqi Chi lingqi@chromium.org
Auto-Submit: Koji Ishii kojii@chromium.org
Commit-Queue: Lingqi Chi lingqi@chromium.org
Cr-Commit-Position: refs/heads/main@{#1309185}