Fix SkTableColorFilter deserialization validation.

Fix SkTableColorFilter deserialization validation.

Broken in https://skia.googlesource.com/skia/+/9fa60daad4d5f54c0dbe3dbcc7608a8f6d721187.

TBR=reed@google.com

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/91c395af69cf10cd13062f143811a7a9a3ce03c7

[Stephen White, 2014-09-25 21:57:20]

The CQ bit was checked by senorblanco@chromium.org

[commit-bot: I haz the power, 2014-09-25 21:57:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/604873004/1

[Stephen White, 2014-09-25 22:00:40]

reed@: I'm landing this one TBR since it's preventing a lot of filters from
rendering correctly in Chrome, and it's a one-character change.

[commit-bot: I haz the power, 2014-09-25 22:15:00]

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

[commit-bot: I haz the power, 2014-09-25 22:15:00]

Try jobs failed on following builders:
  Test-Ubuntu13.10-GCE-NoGPU-x86_64-Release-Shared-Trybot on tryserver.skia
(http://108.170.220.120:10117/builders/Test-Ubuntu13.10-GCE-NoGPU-x86_64-Relea...)

[Stephen White, 2014-09-25 22:43:08]

The CQ bit was checked by senorblanco@chromium.org

[commit-bot: I haz the power, 2014-09-25 22:43:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/604873004/20001

[commit-bot: I haz the power, 2014-09-25 22:51:39]

Committed patchset #2 (id:20001) as 91c395af69cf10cd13062f143811a7a9a3ce03c7

[mtklein, 2014-09-25 23:01:06]

mtklein@google.com changed reviewers:
+ hcm@google.com, mtklein@google.com

[mtklein, 2014-09-25 23:01:06]

Seems like something we'll want on the M39 branch, no?

I know we nominally branched at b5fae93d72c, though the details of that actually
existing or not and when it might exist are unclear to me.  Heather will know
best.