tree de648018c6b77609b828983b97a83bf5cdab36f2
parent c78ccb0b5ef93a9799b0b37ef3a89802d27e7bb6
author stuartmorgan <stuart.morgan@gmail.com> 1552324092 -0700
committer GitHub <noreply@github.com> 1552324092 -0700
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Add support for scrollwheels (#22762)

Adds support for discrete scroll events, such as those sent by a scroll wheel.

Includes the plumbing to convert, dispatch, and handle these events, as well as
Scrollable support for consuming them.