tree 9a23b7ce9febf5f2d37fbd5b053c241b79b02c57
parent f9021145c74025829b14fb0c76b59d16d06d3752
author Sean O'Brien <seobrien@google.com> 1518482253 -0800
committer chrome-bot <chrome-bot@chromium.org> 1519711655 -0800

Prevent flings without a matching scroll

A fling gesture should only be generated after a scroll ends.  We use
the did_generate_scroll_ flag to track if there has been a scroll since
the last fling.  However, this flag is never set to false when a fling
is generated, so it is possible to send fling events without a matching
scroll event.

This CL sets the did_generate_scroll_ flag to false after a fling is
generated.

BUG=chromium:811855
TEST=created a test in touchtests with multiple flings without matching
scrolls.  This CL prevents the extra flings.

Change-Id: I9b8b791b71b906e9579849e93d327359df876ddc
Reviewed-on: https://chromium-review.googlesource.com/916629
Commit-Ready: Sean O'Brien <seobrien@chromium.org>
Tested-by: Sean O'Brien <seobrien@chromium.org>
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>