Add option to force document level passive event listeners as a runtime feature.

Add option to force document level passive event listeners as a runtime feature.

This approach removes the value from the override setting and allows it
to be set as a runtime feature.

Since field trial variations aren't supported in the renderer and only
the browser process adding an additional runtime enabled feature seems
the easiest approach forward.

BUG=625675
Committed: https://crrev.com/acc2fb2eaf19f06817b8ef90b64b195d032a662a
Cr-Commit-Position: refs/heads/master@{#403972}

[dtapuska, 2016-07-05 15:52:19]

dtapuska@chromium.org changed reviewers:
+ rbyers@chromium.org, rkaplow@chromium.org

[dtapuska, 2016-07-05 15:53:42]

dtapuska@chromium.org changed reviewers:
+ creis@chromium.org

[dtapuska, 2016-07-05 15:53:43]

creis@chromium.org: Please review changes in 

content/*

[rkaplow, 2016-07-05 15:54:24]

lgtm

[Rick Byers, 2016-07-06 14:35:18]

LGTM

https://codereview.chromium.org/2125683002/diff/20001/third_party/WebKit/Sour...
File third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in (right):

https://codereview.chromium.org/2125683002/diff/20001/third_party/WebKit/Sour...
third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in:157:
PassiveDocumentEventListeners status=test
May be worth using status=experimental - just to try to give developers a bit
more heads up on what we think is coming.

[Charlie Reis, 2016-07-06 17:25:07]

content/ LGTM.

[dtapuska, 2016-07-06 21:25:39]

The CQ bit was checked by dtapuska@chromium.org

[dtapuska, 2016-07-06 21:25:39]

The patchset sent to the CQ was uploaded after l-g-t-m from
rkaplow@chromium.org, rbyers@chromium.org
Link to the patchset: https://codereview.chromium.org/2125683002/#ps60001
(title: "Rebase")

[commit-bot: I haz the power, 2016-07-06 21:26:33]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-06 23:26:43]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2016-07-06 23:26:47]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-06 23:28:14]

Description was changed from

==========
Add option to force document level passive event listeners as a runtime feature.

This approach removes the value from the override setting and allows it
to be set as a runtime feature.

Since field trial variations aren't supported in the renderer and only
the browser process adding an additional runtime enabled feature seems
the easiest approach forward.

BUG=625675
==========

to

==========
Add option to force document level passive event listeners as a runtime feature.

This approach removes the value from the override setting and allows it
to be set as a runtime feature.

Since field trial variations aren't supported in the renderer and only
the browser process adding an additional runtime enabled feature seems
the easiest approach forward.

BUG=625675

Committed: https://crrev.com/acc2fb2eaf19f06817b8ef90b64b195d032a662a
Cr-Commit-Position: refs/heads/master@{#403972}
==========

[commit-bot: I haz the power, 2016-07-06 23:28:15]

Patchset 4 (id:??) landed as
https://crrev.com/acc2fb2eaf19f06817b8ef90b64b195d032a662a
Cr-Commit-Position: refs/heads/master@{#403972}