Migrate WTF::Vector::append() to ::push_back() in binding templates

third_party/WebKit/Source/bindings/templates/interface_base.cpp.tmpl

 {% filter format_blink_cpp_source_code %}
 
 {% include 'copyright_block.txt' %}
 #include "{{v8_class_or_partial}}.h"
 
 {% for filename in cpp_includes if filename != '%s.h' % cpp_class_or_partial %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
@@ skipping 265 matching lines @@
   BindingSecurity::failedAccessCheckFor(
       info.GetIsolate(),
       {{v8_class}}::toImpl(info.Holder())->frame());
 }
 {% endif %}
 
 {% if has_cross_origin_named_enumerator %}
 void crossOriginNamedEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info) {
   Vector<String> names;
   for (const auto& attribute : kCrossOriginAttributeTable)
-    names.append(attribute.name);
+    names.push_back(attribute.name);
 
   v8SetReturnValue(
       info,
       ToV8(names, info.Holder(), info.GetIsolate()).As<v8::Array>());
 }
 {% endif %}
 
 {% if has_cross_origin_indexed_getter %}
 void crossOriginIndexedGetter(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info) {
   {% if indexed_property_getter.is_custom %}
@@ skipping 357 matching lines @@
 {% block has_instance %}{% endblock %}
 {% block to_impl %}{% endblock %}
 {% block to_impl_with_type_check %}{% endblock %}
 {##############################################################################}
 {% block prepare_prototype_and_interface_object %}{% endblock %}
 {##############################################################################}
 {% block partial_interface %}{% endblock %}
 }  // namespace blink
 
 {% endfilter %}{# format_blink_cpp_source_code #}