extend asAGradient for Conical type (to be implemented by PDF and XPS)
Review URL: https://codereview.appspot.com/6308051

git-svn-id: http://skia.googlecode.com/svn/trunk@4207 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/core/SkShader.h b/include/core/SkShader.h
index 0fb6454..8a4e252 100644
--- a/include/core/SkShader.h
+++ b/include/core/SkShader.h
@@ -267,7 +267,8 @@
         kRadial_GradientType,
         kRadial2_GradientType,
         kSweep_GradientType,
-        kLast_GradientType = kSweep_GradientType
+        kConical_GradientType,
+        kLast_GradientType = kConical_GradientType
     };
 
     struct GradientInfo {