Reland of change all factories to return their base-class

include/effects/Sk1DPathEffect.h

Index: include/effects/Sk1DPathEffect.h
diff --git a/include/effects/Sk1DPathEffect.h b/include/effects/Sk1DPathEffect.h
index 6a7804f1119ac1017ed5a3b73fd2118b9eaa15a7..3419dc23b7458fb084b83339e9a287a51d12ad52 100644
--- a/include/effects/Sk1DPathEffect.h
+++ b/include/effects/Sk1DPathEffect.h
@@ -56,8 +56,7 @@
         @param style how to transform path at each point (based on the current
                      position and tangent)
     */
-    static SkPath1DPathEffect* Create(const SkPath& path, SkScalar advance, SkScalar phase,
-                                      Style style) {
+    static SkPathEffect* Create(const SkPath& path, SkScalar advance, SkScalar phase, Style style) {
         return new SkPath1DPathEffect(path, advance, phase, style);
     }