Handle touchpad flings with passive event listeners on compositor thread.

Handle touchpad flings with passive event listeners on compositor thread.

Touchpad flings that have only passive event listeners were forced to be
main thread. Handle event injection to the main thread event queue
for when we get passive events so it can be entirely done on the
compositor thread.

BUG=646592
TBR=ben@chromium.org

Review-Url: https://codereview.chromium.org/2341873002
Cr-Commit-Position: refs/heads/master@{#419870}
(cherry picked from commit 17dfaf083d4ca457814a6ef205007da1c413752b)

Committed: https://chromium.googlesource.com/chromium/src/+/f9743ba418f7c50e0d0aae830a01669d42ea0eb2

[dtapuska, 2016-09-22 20:44:39]

Description was changed from

==========
Handle touchpad flings with passive event listeners on compositor thread.

Touchpad flings that have only passive event listeners were forced to be
main thread. Handle event injection to the main thread event queue
for when we get passive events so it can be entirely done on the
compositor thread.

BUG=646592
TBR=ben@chromium.org

Review-Url: https://codereview.chromium.org/2341873002
Cr-Commit-Position: refs/heads/master@{#419870}
(cherry picked from commit 17dfaf083d4ca457814a6ef205007da1c413752b)
==========

to

==========
Handle touchpad flings with passive event listeners on compositor thread.

Touchpad flings that have only passive event listeners were forced to be
main thread. Handle event injection to the main thread event queue
for when we get passive events so it can be entirely done on the
compositor thread.

BUG=646592
TBR=ben@chromium.org

Review-Url: https://codereview.chromium.org/2341873002
Cr-Commit-Position: refs/heads/master@{#419870}
(cherry picked from commit 17dfaf083d4ca457814a6ef205007da1c413752b)

Committed:
https://chromium.googlesource.com/chromium/src/+/f9743ba418f7c50e0d0aae830a01...
==========

[dtapuska, 2016-09-22 20:44:43]

Committed patchset #1 (id:1) manually as
f9743ba418f7c50e0d0aae830a01669d42ea0eb2.