GitLab

This is a reland of 8e795d5b

The previous CL was reverted because
FlingControllerWithPhysicsBasedFlingTest in fling_controller_unittest.cc
was flaky. It was found that occasionally a GestureScrollEnd would be
incorrectly processed when a GestureScrollUpdate was expected. This CL
addresses the issue by adding a check for a GSE in relevant areas of the
test.


Original change's description:
> FlingBoost with experimental fling animation curve
>
> Currently, if physics based fling curve is enabled, even if the fling is
> boosted, the scroll distance is capped by upper bound which is three
> times the size of viewport. Thus it nullify the effect of fling boosting
> and travels the same distance as it would if fling is not boosted.
>
> This CL fixes fling boosting with physics based fling curve. It does
> so by increasing the upper bound every time a fling is boosted.
>
> Bug: 647137
> Change-Id: Ib2dd51b37df91168ae1f1e8d33888e3b5dc43e23
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2118218
> Reviewed-by: Navid Zolghadr <nzolghadr@chromium.org>
> Reviewed-by: David Bokan <bokan@chromium.org>
> Reviewed-by: Daniel Libby <dlibby@microsoft.com>
> Commit-Queue: Sahir Vellani <sahir.vellani@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#758878}

Bug: 647137
Change-Id: Ief4dfc3068018ce5fecf168b7c191db5544b90d8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2151054
Commit-Queue: Sahir Vellani <sahir.vellani@microsoft.com>
Reviewed-by: Daniel Libby <dlibby@microsoft.com>
Reviewed-by: David Bokan <bokan@chromium.org>
Reviewed-by: Navid Zolghadr <nzolghadr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#761043}