Migrate WTF::Vector::append() to ::push_back() [part 7 of N]

third_party/WebKit/Source/core/html/HTMLSlotElement.cpp

 /*
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 73 matching lines @@
   HeapVector<Member<Node>> distributedNodes;
   Node* child = NodeTraversal::firstChild(*this);
   while (child) {
     if (!child->isSlotable()) {
       child = NodeTraversal::nextSkippingChildren(*child, this);
       continue;
     }
     if (isHTMLSlotElement(child)) {
       child = NodeTraversal::next(*child, this);
     } else {
-      distributedNodes.append(child);
+      distributedNodes.push_back(child);
       child = NodeTraversal::nextSkippingChildren(*child, this);
     }
   }
   return distributedNodes;
 }
 
 const HeapVector<Member<Node>>& HTMLSlotElement::getDistributedNodes() {
   DCHECK(!needsDistributionRecalc());
   DCHECK(supportsDistribution() || m_distributedNodes.isEmpty());
   return m_distributedNodes;
 }
 
 void HTMLSlotElement::appendAssignedNode(Node& hostChild) {
   DCHECK(hostChild.isSlotable());
-  m_assignedNodes.append(&hostChild);
+  m_assignedNodes.push_back(&hostChild);
 }
 
 void HTMLSlotElement::resolveDistributedNodes() {
   for (auto& node : m_assignedNodes) {
     DCHECK(node->isSlotable());
     if (isHTMLSlotElement(*node))
       appendDistributedNodesFrom(toHTMLSlotElement(*node));
     else
       appendDistributedNode(*node);
 
     if (isChildOfV1ShadowHost())
       parentElementShadow()->setNeedsDistributionRecalc();
   }
 }
 
 void HTMLSlotElement::appendDistributedNode(Node& node) {
   size_t size = m_distributedNodes.size();
-  m_distributedNodes.append(&node);
+  m_distributedNodes.push_back(&node);
   m_distributedIndices.set(&node, size);
 }
 
 void HTMLSlotElement::appendDistributedNodesFrom(const HTMLSlotElement& other) {
   size_t index = m_distributedNodes.size();
   m_distributedNodes.appendVector(other.m_distributedNodes);
   for (const auto& node : other.m_distributedNodes)
     m_distributedIndices.set(node.get(), index++);
 }
 
@@ skipping 223 matching lines @@
 
 DEFINE_TRACE(HTMLSlotElement) {
   visitor->trace(m_assignedNodes);
   visitor->trace(m_distributedNodes);
   visitor->trace(m_oldDistributedNodes);
   visitor->trace(m_distributedIndices);
   HTMLElement::trace(visitor);
 }
 
 }  // namespace blink