webrtc: Remove dependency on xdisplaycheck

webrtc: Remove dependency on xdisplaycheck

BUG=670470

[Tom (Use chromium acct), 2016-12-01 19:38:25]

thomasanderson@google.com changed reviewers:
+ dpranke@chromium.org

[Dirk Pranke, 2016-12-01 20:43:35]

dpranke@chromium.org changed reviewers:
+ kjellander@webrtc.org

[Dirk Pranke, 2016-12-01 20:43:53]

lgtm. To kjellander@ for actual approval.

[Tom (Use chromium acct), 2016-12-01 22:11:05]

The CQ bit was checked by thomasanderson@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-12-01 22:11:07]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2016-12-01 22:17:17]

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

[commit-bot: I haz the power, 2016-12-01 22:17:18]

Dry run: Try jobs failed on following builders:
  presubmit on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/presubmit/builds/10977)

[Tom (Use chromium acct), 2016-12-01 22:22:22]

Description was changed from

==========
webrtc: Remove dependency on xdisplaycheck
==========

to

==========
webrtc: Remove dependency on xdisplaycheck

BUG=670470
==========

[Tom (Use chromium acct), 2016-12-01 22:22:28]

The CQ bit was checked by thomasanderson@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-12-01 22:22:37]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2016-12-01 22:25:07]

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

[commit-bot: I haz the power, 2016-12-01 22:25:08]

Dry run: This issue passed the CQ dry run.

[kjellander_webrtc, 2016-12-02 06:46:16]

On 2016/12/01 20:43:53, Dirk Pranke wrote:
> lgtm. To kjellander@ for actual approval.

We currently depend on xdisplaycheck similar to Chromium:
https://cs.chromium.org/chromium/src/tools/mb/mb.py?rcl=0&l=1106 since it's used
for tests that runs with a Window environment.
I triggered a clobbered tryjob for this CL using: git cl try --bot=linux_rel
--clobber -m tryserver.webrtc
and as you can see in
https://build.chromium.org/p/tryserver.webrtc/builders/linux_rel/builds/20863
it's failing.

After removing it from our mb.py copy, it seems to work though, so I created
https://codereview.webrtc.org/2548763002/
I'm closing this CL in favor for that one.