Revert of Use GrConvexPolyEffect when clip is a single convex polygon

Revert of Use GrConvexPolyEffect when clip is a single convex polygon (https://codereview.chromium.org/151523005/)

Reason for revert:
unit tests crashing on windows?

Original issue's description:
> Use GrConvexPolyEffect when clip is a single convex polygon
> 
> BUG=skia:2051
> 
> Committed: http://code.google.com/p/skia/source/detail?r=13286

TBR=robertphillips@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:2051
Committed: https://code.google.com/p/skia/source/detail?r=13288

[bsalomon, 2014-02-03 20:06:16]

Created Revert of Use GrConvexPolyEffect when clip is a single convex polygon

[commit-bot: I haz the power, 2014-02-03 20:06:19]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/bsalomon@google.com/142443006/1

[commit-bot: I haz the power, 2014-02-03 20:06:22]

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

[commit-bot: I haz the power, 2014-02-03 20:06:22]

Failed to apply patch for expectations/gm/ignored-tests.txt:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file expectations/gm/ignored-tests.txt
  patch unexpectedly ends in middle of line

Patch:       expectations/gm/ignored-tests.txt
Index: expectations/gm/ignored-tests.txt
diff --git a/expectations/gm/ignored-tests.txt
b/expectations/gm/ignored-tests.txt
index
727dc1eb4675dcc5e2281e3cd7b1b5eb237a3a69..cf708c836d9c247ac356c2197ce7a2bbe25bd11a
100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -31,7 +31,4 @@
 ## Added by epoger as part of MADE-UP BUG
 ## https://code.google.com/p/skia/issues/detail?id=123456 : ignoring failures
on
 ## gradtext GM test
-#gradtext
-
-# Added by bsalomon for skbug.com/2051,
https://codereview.chromium.org/151523005
-filltypes_persp
+#gradtext

[commit-bot: I haz the power, 2014-02-03 20:06:28]

CQ bit was unchecked on CL. Ignoring.

[bsalomon, 2014-02-03 20:10:01]

Committed patchset #2 manually as r13288.