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Get rid of unnecessary scrollend events when keyboard scrolling - #38003
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When calling ScrollAnimator::UserScroll, if previous animation for updating scroll offset is still running, don't call the on_finish_ callback yet, drop it instead. This way if user keeps scrolling and is not done yet, they will receive scrollend once only at the end, not after each keydown event for example. Bug:1400445 Change-Id: Id60b57c18fdf15aa42c0e6e6371d7981949a5b6b
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When calling ScrollAnimator::UserScroll, if previous animation
for updating scroll offset is still running, don't call the
on_finish_ callback yet, drop it instead. This way if user
keeps scrolling and is not done yet, they will receive scrollend
once only at the end, not after each keydown event for example.
Bug:1400445
Change-Id: Id60b57c18fdf15aa42c0e6e6371d7981949a5b6b
Reviewed-on: https://chromium-review.googlesource.com/4168692
WPT-Export-Revision: b9e1ad286a554238804a36d1925cb7fd704c8c53