Remove unused field in micro cleanup

Remove unused field in micro cleanup

TBR=bsalomon@google.com
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/58ff81b42be51f8b4f4abf256dba0490a2562f94

[joshualitt, 2015-07-31 13:16:24]

The CQ bit was checked by joshualitt@google.com

[commit-bot: I haz the power, 2015-07-31 13:16:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1268893002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1268893002/1

[commit-bot: I haz the power, 2015-07-31 13:17:05]

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

[commit-bot: I haz the power, 2015-07-31 13:17:06]

Try jobs failed on following builders:
  Build-Ubuntu-Clang-x86_64-Debug-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-Clang-x...)
  Build-Ubuntu-GCC-Arm64-Debug-Android-Trybot on client.skia.compile
(JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-Arm...)
  Build-Ubuntu-GCC-Mips-Debug-Android-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-Mip...)

[robertphillips, 2015-07-31 13:22:52]

robertphillips@google.com changed reviewers:
+ robertphillips@google.com

[robertphillips, 2015-07-31 13:22:53]

lgtm

[joshualitt, 2015-07-31 13:29:28]

The CQ bit was checked by joshualitt@google.com

[joshualitt, 2015-07-31 13:29:28]

The patchset sent to the CQ was uploaded after l-g-t-m from
robertphillips@google.com
Link to the patchset: https://codereview.chromium.org/1268893002/#ps20001
(title: "remove assert")

[commit-bot: I haz the power, 2015-07-31 13:29:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1268893002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1268893002/20001

[commit-bot: I haz the power, 2015-07-31 13:37:52]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/58ff81b42be51f8b4f4abf256dba0490a2562f94