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

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

Index: third_party/WebKit/Source/core/html/HTMLFormControlsCollection.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLFormControlsCollection.cpp b/third_party/WebKit/Source/core/html/HTMLFormControlsCollection.cpp
index 68013998e211578fcf499303f3e1fcc2fd17e6d0..8810a78d9a731205b666356c153e97980998b99e 100644
--- a/third_party/WebKit/Source/core/html/HTMLFormControlsCollection.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLFormControlsCollection.cpp
@@ -207,14 +207,14 @@ void HTMLFormControlsCollection::supportedPropertyNames(Vector<String>& names) {
       HashSet<AtomicString>::AddResult addResult =
           existingNames.add(idAttribute);
       if (addResult.isNewEntry)
-        names.append(idAttribute);
+        names.push_back(idAttribute);
     }
     const AtomicString& nameAttribute = element->getNameAttribute();
     if (!nameAttribute.isEmpty()) {
       HashSet<AtomicString>::AddResult addResult =
           existingNames.add(nameAttribute);
       if (addResult.isNewEntry)
-        names.append(nameAttribute);
+        names.push_back(nameAttribute);
     }
   }
 }