Revert of Skia roll 30e6e2a:373dd9b

Revert of Skia roll 30e6e2a:373dd9b (https://codereview.chromium.org/346823002/)

Reason for revert:
I believe this breaks the layout test svg/filters/big-sized-filter-2.svg.  It's misrendering / crashing on all platforms:

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20Chromium&showExpectations=true&tests=svg%2Ffilters%2Fbig-sized-filter-2.svg

Original issue's description:
> Skia roll 30e6e2a:373dd9b
> 
> https://skia.googlesource.com/skia/+log/30e6e2af14e84216b1c113fd7500d0822bc81daa..373dd9b52f88158edd1e24419e6d937efaf59d55
> 
> CQ_EXTRA_TRYBOTS=tryserver.chromium:linux_layout_rel
> TBR=reed@google.com
> BUG=
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=278426

TBR=reed@google.com,skia-deps-roller@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=278455

[jamesr, 2014-06-19 19:32:45]

Created Revert of Skia roll 30e6e2a:373dd9b

[commit-bot: I haz the power, 2014-06-19 19:34:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamesr@chromium.org/343953003/1

[commit-bot: I haz the power, 2014-06-19 19:36:48]

Change committed as 278455