Migrate WTF::Vector::append() to ::push_back() [part 12 of N]

third_party/WebKit/Source/core/input/BoundaryEventDispatcher.cpp

Index: third_party/WebKit/Source/core/input/BoundaryEventDispatcher.cpp
diff --git a/third_party/WebKit/Source/core/input/BoundaryEventDispatcher.cpp b/third_party/WebKit/Source/core/input/BoundaryEventDispatcher.cpp
index c1cd91a7b3b8ea8ed08326a216adce6b06764ac8..2e01b7cbce925194d95d1ac51e5dc9fe27ec5765 100644
--- a/third_party/WebKit/Source/core/input/BoundaryEventDispatcher.cpp
+++ b/third_party/WebKit/Source/core/input/BoundaryEventDispatcher.cpp
@@ -25,7 +25,7 @@ void buildAncestorChain(EventTarget* target,
   // Index 0 element in the ancestors arrays will be the corresponding
   // target. So the root of their document will be their last element.
   for (Node* node = targetNode; node; node = FlatTreeTraversal::parent(*node))
-    ancestors->append(node);
+    ancestors->push_back(node);
 }
 
 void buildAncestorChainsAndFindCommonAncestors(