[Ozone-DRM] Fix double call of swap buffers callback on failure

[Ozone-DRM] Fix double call of swap buffers callback on failure

The HardwareDisplayController handles all cases and should call the
callback even on failure. Make sure this happens otherwise we signal
failed swaps twice.

BUG=537836
TBR=dnicoara@chromium.org

Review URL: https://codereview.chromium.org/1417423002

Cr-Commit-Position: refs/heads/master@{#355815}
(cherry picked from commit aebd8ebe5cccb7fce8f446db01f8e9bea8176435)

Committed: https://chromium.googlesource.com/chromium/src/+/e223245d89e192c153b0107565e9722226589f23

[oshima, 2015-10-26 18:57:20]

The CQ bit was checked by oshima@chromium.org

[commit-bot: I haz the power, 2015-10-26 18:58:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1420943003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1420943003/1

[commit-bot: I haz the power, 2015-10-26 18:58:54]

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

[commit-bot: I haz the power, 2015-10-26 18:58:54]

CLs for remote refs other than refs/pending/heads/master must contain NOTRY=true
and NOPRESUBMIT=true in order for the CQ to process them

[oshima, 2015-10-26 19:14:40]

Committed patchset #1 (id:1) manually as
e223245d89e192c153b0107565e9722226589f23 (presubmit successful).