re-enable simpleblurroundrect gm now that all the rebaselines have landed

BUG=skia:
R=djsollen@google.com

Author: humper@google.com

Review URL: https://codereview.chromium.org/268763004

git-svn-id: http://skia.googlecode.com/svn/trunk@14542 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index c57a0cc..8a4dcc9 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -37,7 +37,3 @@
 # This change removes an API that this GM was testing. If/when it lands and sticks,
 # I will likely just delete the GM.
 canvas-layer-state
-
-# humper: https://codereview.chromium.org/248613004/
-# Changed the test in a few ways, will need rebaselining.
-simpleblurroundrect