simplify insertion methods for SkTLList

src/gpu/GrReducedClip.cpp

Index: src/gpu/GrReducedClip.cpp
diff --git a/src/gpu/GrReducedClip.cpp b/src/gpu/GrReducedClip.cpp
index 137c83e411ec1af46779587099b9a5f6d4ecf820..9a6a6149add026cde688033908dfba96af5fc200 100644
--- a/src/gpu/GrReducedClip.cpp
+++ b/src/gpu/GrReducedClip.cpp
@@ -206,9 +206,7 @@ static void reduced_stack_walker(const SkClipStack& stack,
             if (isFlip) {
                 SkASSERT(SkRegion::kXOR_Op == element->getOp() ||
                          SkRegion::kReverseDifference_Op == element->getOp());
-                SkNEW_INSERT_AT_LLIST_HEAD(result,
-                                           Element,
-                                           (queryBounds, SkRegion::kReverseDifference_Op, false));
+                result->addToHead(queryBounds, SkRegion::kReverseDifference_Op, false);
             } else {
                 Element* newElement = result->addToHead(*element);
                 if (newElement->isAA()) {
@@ -386,7 +384,7 @@ void GrReducedClip::ReduceClipStack(const SkClipStack& stack,
             // iior should only be true if aa/non-aa status matches among all elements.
             SkClipStack::Iter iter(stack, SkClipStack::Iter::kTop_IterStart);
             bool doAA = iter.prev()->isAA();
-            SkNEW_INSERT_AT_LLIST_HEAD(result, Element, (isectRect, SkRegion::kReplace_Op, doAA));
+            result->addToHead(isectRect, SkRegion::kReplace_Op, doAA);
             if (requiresAA) {
                 *requiresAA = doAA;
             }