Migrate WTF::Vector::append() to ::push_back() [part 4 of N]

third_party/WebKit/Source/core/dom/ContainerNode.cpp

Index: third_party/WebKit/Source/core/dom/ContainerNode.cpp
diff --git a/third_party/WebKit/Source/core/dom/ContainerNode.cpp b/third_party/WebKit/Source/core/dom/ContainerNode.cpp
index 8e46d3dcbe026f9a26ed270f24ef6521456dc4b5..9247542f8a9b558d4adf342dcc43abcd401a4896 100644
--- a/third_party/WebKit/Source/core/dom/ContainerNode.cpp
+++ b/third_party/WebKit/Source/core/dom/ContainerNode.cpp
@@ -76,7 +76,7 @@ static inline void collectChildrenAndRemoveFromOldParent(
     fragment.removeChildren();
     return;
   }
-  nodes.append(&node);
+  nodes.push_back(&node);
   if (ContainerNode* oldParent = node.parentNode())
     oldParent->removeChild(&node, exceptionState);
 }
@@ -728,7 +728,7 @@ void ContainerNode::notifyNodeInsertedInternal(
       continue;
     if (Node::InsertionShouldCallDidNotifySubtreeInsertions ==
         node.insertedInto(this))
-      postInsertionNotificationTargets.append(&node);
+      postInsertionNotificationTargets.push_back(&node);
     for (ShadowRoot* shadowRoot = node.youngestShadowRoot(); shadowRoot;
          shadowRoot = shadowRoot->olderShadowRoot())
       notifyNodeInsertedInternal(*shadowRoot, postInsertionNotificationTargets);