Use visitDOMWrapper to preserve WebGL JS object wrappers

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

 {% extends 'interface_base.cpp' %}
 
 {% set has_prepare_prototype_and_interface_object =
     unscopeables or has_conditional_attributes_on_prototype or
     methods | conditionally_exposed(is_partial) %}
 {% set prepare_prototype_and_interface_object_func =
     '%s::preparePrototypeAndInterfaceObject' % v8_class
     if has_prepare_prototype_and_interface_object
     else 'nullptr' %}
 
@@ skipping 548 matching lines @@
 
 {% endif %}
 {% endblock %}
 
 {##############################################################################}
 {% block visit_dom_wrapper %}
 {% if set_wrapper_reference_from or set_wrapper_reference_to %}
 void {{v8_class}}::visitDOMWrapper(v8::Isolate* isolate, ScriptWrappable* scriptWrappable, const v8::Persistent<v8::Object>& wrapper)
 {
     {{cpp_class}}* impl = scriptWrappable->toImpl<{{cpp_class}}>();
+    {% if has_visit_dom_wrapper_extra %}
+    {{v8_class}}::visitDOMWrapperExtra(isolate, impl, wrapper);
+    {% endif %}
     {% if set_wrapper_reference_to %}
     {{set_wrapper_reference_to.cpp_type}} {{set_wrapper_reference_to.name}} = impl->{{set_wrapper_reference_to.name}}();
     if ({{set_wrapper_reference_to.name}}) {
         DOMWrapperWorld::setWrapperReferencesInAllWorlds(wrapper, {{set_wrapper_reference_to.name}}, isolate);
     }
     {% endif %}
     {% if set_wrapper_reference_from %}
     // The {{set_wrapper_reference_from}}() method may return a reference or a pointer.
     if (Node* owner = WTF::getPtr(impl->{{set_wrapper_reference_from}}())) {
         Node* root = V8GCController::opaqueRootForGC(isolate, owner);
@@ skipping 350 matching lines @@
 
 {% for method in methods if method.overloads and method.overloads.has_partial_overloads %}
 void {{v8_class}}::register{{method.name | blink_capitalize}}MethodForPartialInterface(void (*method)(const v8::FunctionCallbackInfo<v8::Value>&))
 {
     {{cpp_class}}V8Internal::{{method.name}}MethodForPartialInterface = method;
 }
 
 {% endfor %}
 {% endif %}
 {% endblock %}