Add a test for decoding a gif with sampleSize 4.

Add a test for decoding a gif with sampleSize 4.

Prior to https://codereview.chromium.org/1085253002/, this would crash.

Only happens with interlaced gif images with an odd height. (Maybe
there are more restrictions?)

Test image provided by zoran.jovanovic@sonymobile.com for checking in.

Add include before includes.

Committed: https://skia.googlesource.com/skia/+/9d214295e47405019d1494182a5182a92a22f0a6

[scroggo, 2015-04-21 16:23:50]

scroggo@google.com changed reviewers:
+ msarett@google.com

[scroggo, 2015-04-21 16:24:02]

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

[commit-bot: I haz the power, 2015-04-21 16:24:17]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1091053002/20001

[commit-bot: I haz the power, 2015-04-21 16:37:51]

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

[commit-bot: I haz the power, 2015-04-21 16:37:52]

Dry run: This issue passed the CQ dry run.

[scroggo, 2015-05-13 17:48:35]

PTAL

[msarett, 2015-05-14 21:25:54]

lgtm

[scroggo, 2015-05-14 21:36:54]

The CQ bit was checked by scroggo@google.com

[commit-bot: I haz the power, 2015-05-14 21:37:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1091053002/20001

[commit-bot: I haz the power, 2015-05-14 21:44:18]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/9d214295e47405019d1494182a5182a92a22f0a6