content: Cleanup IOSurface/SurfaceTexture destruction code.

content: Cleanup IOSurface/SurfaceTexture destruction code.

BUG=323304
TBR=piman@chromium.org
TEST=content_unittests --gtest_filter=GpuMemoryBufferFactroy*

Committed: https://crrev.com/f5f47b3624238812e0ef04cff5ea4dde703c7b6b
Cr-Commit-Position: refs/heads/master@{#329078}

[reveman, 2015-05-09 15:52:20]

reveman@chromium.org changed reviewers:
+ dcastagna@chromium.org

[reveman, 2015-05-09 15:53:20]

The CQ bit was checked by reveman@chromium.org

[commit-bot: I haz the power, 2015-05-09 15:55:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1131463004/1

[commit-bot: I haz the power, 2015-05-09 19:58:02]

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

[commit-bot: I haz the power, 2015-05-09 19:58:03]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_TIMED_OUT, no build URL)
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_TIMED_OUT, no
build URL)

[reveman, 2015-05-10 13:43:28]

The CQ bit was checked by reveman@chromium.org

[commit-bot: I haz the power, 2015-05-10 13:44:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1131463004/1

[commit-bot: I haz the power, 2015-05-10 17:54:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-10 17:55:34]

Patchset 1 (id:??) landed as
https://crrev.com/f5f47b3624238812e0ef04cff5ea4dde703c7b6b
Cr-Commit-Position: refs/heads/master@{#329078}