tree 0b49b7438e56998d1aaaaa463f47a93b2522f1ff
parent bae4e099aebb8f0ac13103315e52629d622a0d01
author Tim Murray <timmurray@google.com> 1442601774 -0700
committer Tim Murray <timmurray@google.com> 1442868655 -0700

Change touch boost behavior: extent and handles.

This patch does three things:

1. Changes the upmigrate/downmigrate values based on the last boost.
Any touch within 750ms will result in higher upmigrate/downmigrate
values. This is used to approximate detection of constant
input (typing).

2. Moves to multiple handles for handling touch boost rather than
reusing the same handle for each successive component of the boost.

3. Rate limits the boost such that we don't boost more than every 250ms.

bug 24113279
bug 24064601

Change-Id: Ib81e478f17191a1a27e64774e4132fe97e18f124