Only assert that conic/quad effects get created if they are to be used.

R=jvanverth@google.com

Author: bsalomon@google.com

Review URL: https://chromiumcodereview.appspot.com/22891023

git-svn-id: http://skia.googlecode.com/svn/trunk/src@10900 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed