[bindings] add support for integer-indexed @@iterator

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

 {% include 'copyright_block.txt' %}
 #include "config.h"
 {% filter conditional(conditional_string) %}
 #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 328 matching lines @@
     ALLOW_UNUSED_LOCAL(instanceTemplate);
     v8::Local<v8::ObjectTemplate> prototypeTemplate = functionTemplate->PrototypeTemplate();
     ALLOW_UNUSED_LOCAL(prototypeTemplate);
     {% if custom_registration_methods %}
     ExecutionContext* context = currentExecutionContext(isolate);
     ALLOW_UNUSED_LOCAL(context);
     {% endif %}
     {% if has_access_check_callbacks %}
     instanceTemplate->SetAccessCheckCallbacks({{cpp_class}}V8Internal::namedSecurityCheck, {{cpp_class}}V8Internal::indexedSecurityCheck, v8::External::New(isolate, const_cast<WrapperTypeInfo*>(&{{v8_class}}::wrapperTypeInfo)));
     {% endif %}
+    {% if has_array_iterator %}
+    {% filter runtime_enabled('RuntimeEnabledFeatures::iterableCollectionsEnabled') %}
+    {% if is_global %}
+    instanceTemplate->Set(v8::Symbol::GetIterator(isolate), v8::Array::GetValuesIterator(isolate), v8::DontEnum);
+    {% else %}
+    prototypeTemplate->Set(v8::Symbol::GetIterator(isolate), v8::Array::GetValuesIterator(isolate), v8::DontEnum);
+    {% endif %}
+    {% endfilter %}{# runtime_enabled() #}
+    {% endif %}
     {% for attribute in attributes
        if attribute.runtime_enabled_function and
           not attribute.exposed_test %}
     {% filter conditional(attribute.conditional_string) %}
     if ({{attribute.runtime_enabled_function}}()) {
         {% if attribute.is_data_type_property %}
         const V8DOMConfiguration::AttributeConfiguration attributeConfiguration = \
         {{attribute_configuration(attribute)}};
         V8DOMConfiguration::installAttribute(isolate, instanceTemplate, prototypeTemplate, attributeConfiguration);
         {% else %}
@@ skipping 136 matching lines @@
 {% endfor %}
 {% for attribute in attributes if attribute.is_implemented_in_private_script %}
 {{attribute_getter_implemented_in_private_script(attribute)}}
 {% if attribute.has_setter %}
 {{attribute_setter_implemented_in_private_script(attribute)}}
 {% endif %}
 {% endfor %}
 {% block partial_interface %}{% endblock %}
 } // namespace blink
 {% endfilter %}