change all factories to return their base-class

tests/DrawPathTest.cpp

Index: tests/DrawPathTest.cpp
diff --git a/tests/DrawPathTest.cpp b/tests/DrawPathTest.cpp
index e5d50d33d70745cbef3fb925339f085cee7b981e..721b0304779c4b4572c5575c4653e48039316800 100644
--- a/tests/DrawPathTest.cpp
+++ b/tests/DrawPathTest.cpp
@@ -192,7 +192,7 @@ static void test_crbug_140642() {
      */
 
     const SkScalar vals[] = { 27734, 35660, 2157846850.0f, 247 };
-    SkAutoTUnref<SkDashPathEffect> dontAssert(SkDashPathEffect::Create(vals, 4, -248.135982067f));
+    SkAutoTUnref<SkPathEffect> dontAssert(SkDashPathEffect::Create(vals, 4, -248.135982067f));
 }
 
 static void test_crbug_124652() {
@@ -202,7 +202,7 @@ static void test_crbug_124652() {
         large values can "swamp" small ones.
      */
     SkScalar intervals[2] = {837099584, 33450};
-    SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, -10));
+    SkAutoTUnref<SkPathEffect> dash(SkDashPathEffect::Create(intervals, 2, -10));
 }
 
 static void test_bigcubic() {
@@ -242,7 +242,7 @@ static void test_infinite_dash(skiatest::Reporter* reporter) {
     path.lineTo(5000000, 0);
 
     SkScalar intervals[] = { 0.2f, 0.2f };
-    SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
+    SkAutoTUnref<SkPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
 
     SkPath filteredPath;
     SkPaint paint;
@@ -262,7 +262,7 @@ static void test_crbug_165432(skiatest::Reporter* reporter) {
     path.lineTo(10000000, 0);
 
     SkScalar intervals[] = { 0.5f, 0.5f };
-    SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
+    SkAutoTUnref<SkPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
 
     SkPaint paint;
     paint.setStyle(SkPaint::kStroke_Style);