change all factories to return their base-class

include/effects/SkDashPathEffect.h

Index: include/effects/SkDashPathEffect.h
diff --git a/include/effects/SkDashPathEffect.h b/include/effects/SkDashPathEffect.h
index d3adeed99a6d2f4276225eb16ddd638fb662e543..3c1407b7257946e0072f8db2f87b8d0a1dbd387a 100644
--- a/include/effects/SkDashPathEffect.h
+++ b/include/effects/SkDashPathEffect.h
@@ -36,8 +36,7 @@ public:
 
         Note: only affects stroked paths.
     */
-    static SkDashPathEffect* Create(const SkScalar intervals[], int count,
-                                    SkScalar phase) {
+    static SkPathEffect* Create(const SkScalar intervals[], int count, SkScalar phase) {
         return new SkDashPathEffect(intervals, count, phase);
     }
     virtual ~SkDashPathEffect();