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The only callsite of CommitPendingEndOverhang() is
NGLineBreaker::HandleText(), and it is called for NGInlineItem::kControl
for a TAB character as well as NGInlineItem::kText. So,
CommitPendingEndOverhang() should take care of NGInlineItem::kControl.

This CL updates CommitPendingEndOverhang() so that a ruby annotation
text doesn't hang over a TAB character.

This CL also adds a stream printer for blink::NGLineInfo.

Bug: 1138943
Change-Id: I478e93086f449b8e4cda4c8828d34f4111d80ea6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2483739
Auto-Submit: Kent Tamura <tkent@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818369}