Remove lazy layout preference plumbing

Remove lazy layout preference plumbing

This is dead code as the Blink bits were removed in
http://src.chromium.org/viewvc/blink?view=revision&revision=156126

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=276417

[darin (slow to review), 2014-06-10 04:52:38]

OK, LGTM

[Julien - ping for review, 2014-06-10 16:58:33]

The CQ bit was checked by jchaffraix@chromium.org

[commit-bot: I haz the power, 2014-06-10 17:02:25]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jchaffraix@chromium.org/326823003/1

[Julien - ping for review, 2014-06-10 20:20:07]

Adding some security folks for OWNERS approval, this is a trivial removal of an
unused IPC message.

[jln (very slow on Chromium), 2014-06-10 20:25:19]

security lgtm

[commit-bot: I haz the power, 2014-06-11 01:11:58]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_chromium_x64_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_x64_rel/...)

[commit-bot: I haz the power, 2014-06-11 07:14:57]

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

[commit-bot: I haz the power, 2014-06-11 07:14:58]

Try jobs failed on following builders:
  win_chromium_x64_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_x64_rel/...)

[Julien - ping for review, 2014-06-11 15:56:56]

The CQ bit was checked by jchaffraix@chromium.org

[commit-bot: I haz the power, 2014-06-11 16:00:11]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jchaffraix@chromium.org/326823003/1

[commit-bot: I haz the power, 2014-06-11 16:02:41]

Change committed as 276417