Remove Chromium plumbing for fixed-position-creates-stacking-context.

Remove Chromium plumbing for fixed-position-creates-stacking-context

This is a no-op since over a month ago:
https://codereview.chromium.org/206463009/

So it's probably safe to remove the Chromium code which plumbs
this preference around before Blink drops it on the floor.

After this lands, WebSettings::setFixedPositionCreatesStackingContext
can be removed entirely.

BUG=354688
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=273045

[jbroman, 2014-05-16 20:17:38]

I assume this plumbing was just forgotten after the original change?

If this LGTY, I'll add the necessary OWNERS to this review.

[jbroman, 2014-05-24 01:05:04]

On 2014/05/16 20:17:38, jbroman wrote:
> I assume this plumbing was just forgotten after the original change?
> 
> If this LGTY, I'll add the necessary OWNERS to this review.

I think abarth is OOO these days. jochen, WDYT?

[jochen (gone - plz use gerrit), 2014-05-24 10:58:36]

lgtm

[jbroman, 2014-05-26 13:31:13]

+jamesr for webkit/

[jamesr, 2014-05-27 17:29:32]

lgtm

[jbroman, 2014-05-27 17:29:54]

The CQ bit was checked by jbroman@chromium.org

[commit-bot: I haz the power, 2014-05-27 17:31:37]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jbroman@chromium.org/289973008/1

[commit-bot: I haz the power, 2014-05-27 18:18:22]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  chromium_presubmit on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/chromium_presubmit/bu...)

[commit-bot: I haz the power, 2014-05-27 18:22:19]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-05-27 18:22:21]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/chromium_presubmit/bu...)

[jbroman, 2014-05-27 19:54:11]

The CQ bit was checked by jbroman@chromium.org

[commit-bot: I haz the power, 2014-05-27 19:55:22]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jbroman@chromium.org/289973008/20001

[jbroman, 2014-05-27 20:06:36]

+dcheng for content/public/common/common_param_traits_macros.h

didn't notice the 'set noparent' OWNERS before

[jbroman, 2014-05-27 20:07:08]

The CQ bit was unchecked by jbroman@chromium.org

[dcheng, 2014-05-27 20:15:15]

rslgtm

[jbroman, 2014-05-27 20:22:32]

The CQ bit was checked by jbroman@chromium.org

[commit-bot: I haz the power, 2014-05-27 20:24:16]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jbroman@chromium.org/289973008/20001

[commit-bot: I haz the power, 2014-05-27 21:52:53]

Change committed as 273045