add test for https://code.google.com/p/skia/issues/detail?id=1706

BUG=

Review URL: https://codereview.chromium.org/27344002

git-svn-id: http://skia.googlecode.com/svn/trunk@11774 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed