mojo: handle WM_DELETE_WINDOW in native_viewport_x11

mojo: handle WM_DELETE_WINDOW in native_viewport_x11

BUG=none
R=darin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=276745

[tim (not reviewing), 2014-06-09 23:22:16]

I think this on its own is safe, undoing a != flip from
https://codereview.chromium.org/293033003. However something is crashing further
down the line when actually trying to shutdown and I'm still trying to sort that
out; sent email separately.

[tim (not reviewing), 2014-06-11 20:26:38]

On 2014/06/09 23:22:16, timsteele wrote:
> I think this on its own is safe, undoing a != flip from
> https://codereview.chromium.org/293033003. However something is crashing
further
> down the line when actually trying to shutdown and I'm still trying to sort
that
> out; sent email separately.

gentle ping

[darin (slow to review), 2014-06-11 21:51:11]

LGTM

[tim (not reviewing), 2014-06-11 22:14:56]

The CQ bit was checked by tim@chromium.org

[commit-bot: I haz the power, 2014-06-11 22:16:23]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tim@chromium.org/324823002/1

[commit-bot: I haz the power, 2014-06-11 22:34:03]

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

[commit-bot: I haz the power, 2014-06-11 22:35:37]

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

[commit-bot: I haz the power, 2014-06-11 22:35:38]

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

[tim (not reviewing), 2014-06-12 18:21:09]

Committed patchset #1 manually as r276745 (presubmit successful).