Revert of ix misc asserts and checks found by fuzzer

include/core/SkPathEffect.h

Index: include/core/SkPathEffect.h
diff --git a/include/core/SkPathEffect.h b/include/core/SkPathEffect.h
index a77b9467e42fda294329976e6fddf6f2ce436fe6..bd68c8fa728bac5604e5f140537cef6d4f879fcd 100644
--- a/include/core/SkPathEffect.h
+++ b/include/core/SkPathEffect.h
@@ -183,13 +183,7 @@
         The reference counts for outer and inner are both incremented in the constructor,
         and decremented in the destructor.
     */
-    static SkPathEffect* Create(SkPathEffect* outer, SkPathEffect* inner) {
-        if (!outer) {
-            return SkSafeRef(inner);
-        }
-        if (!inner) {
-            return SkSafeRef(outer);
-        }
+    static SkComposePathEffect* Create(SkPathEffect* outer, SkPathEffect* inner) {
         return new SkComposePathEffect(outer, inner);
     }
 
@@ -226,13 +220,7 @@
         The reference counts for first and second are both incremented in the constructor,
         and decremented in the destructor.
     */
-    static SkPathEffect* Create(SkPathEffect* first, SkPathEffect* second) {
-        if (!first) {
-            return SkSafeRef(second);
-        }
-        if (!second) {
-            return SkSafeRef(first);
-        }
+    static SkSumPathEffect* Create(SkPathEffect* first, SkPathEffect* second) {
         return new SkSumPathEffect(first, second);
     }