[v8 gc] Introduce a base class for all objects that can have pending activity

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

Index: third_party/WebKit/Source/bindings/templates/interface.cpp
diff --git a/third_party/WebKit/Source/bindings/templates/interface.cpp b/third_party/WebKit/Source/bindings/templates/interface.cpp
index a6f98861f9cfcb3a289a782230eef86b9caf885c..4315091234a411d48b1616e996527d2da58448b9 100644
--- a/third_party/WebKit/Source/bindings/templates/interface.cpp
+++ b/third_party/WebKit/Source/bindings/templates/interface.cpp
@@ -456,13 +456,15 @@ static void {{cpp_class}}OriginSafeMethodSetterCallback(v8::Local<v8::Name> name
 {% block named_constructor %}
 {% from 'methods.cpp' import generate_constructor with context %}
 {% if named_constructor %}
+{% set to_active_scriptwrappable = '%s::toActiveScriptWrappable' % v8_class
+                                   if active_scriptwrappable else '0' %}
 // Suppress warning: global constructors, because struct WrapperTypeInfo is trivial
 // and does not depend on another global objects.
 #if defined(COMPONENT_BUILD) && defined(WIN32) && COMPILER(CLANG)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wglobal-constructors"
 #endif
-const WrapperTypeInfo {{v8_class}}Constructor::wrapperTypeInfo = { gin::kEmbedderBlink, {{v8_class}}Constructor::domTemplate, {{v8_class}}::refObject, {{v8_class}}::derefObject, {{v8_class}}::trace, 0, {{v8_class}}::preparePrototypeAndInterfaceObject, {{v8_class}}::installConditionallyEnabledProperties, "{{interface_name}}", 0, WrapperTypeInfo::WrapperTypeObjectPrototype, WrapperTypeInfo::{{wrapper_class_id}}, WrapperTypeInfo::{{event_target_inheritance}}, WrapperTypeInfo::{{lifetime}}, WrapperTypeInfo::{{gc_type}} };
+const WrapperTypeInfo {{v8_class}}Constructor::wrapperTypeInfo = { gin::kEmbedderBlink, {{v8_class}}Constructor::domTemplate, {{v8_class}}::refObject, {{v8_class}}::derefObject, {{v8_class}}::trace, {{to_active_scriptwrappable}}, 0, {{v8_class}}::preparePrototypeAndInterfaceObject, {{v8_class}}::installConditionallyEnabledProperties, "{{interface_name}}", 0, WrapperTypeInfo::WrapperTypeObjectPrototype, WrapperTypeInfo::{{wrapper_class_id}}, WrapperTypeInfo::{{event_target_inheritance}}, WrapperTypeInfo::{{lifetime}}, WrapperTypeInfo::{{gc_type}} };
 #if defined(COMPONENT_BUILD) && defined(WIN32) && COMPILER(CLANG)
 #pragma clang diagnostic pop
 #endif
@@ -907,6 +909,18 @@ V8DOMConfiguration::installAccessor(isolate, v8::Local<v8::Object>(), prototypeO
 
 
 {##############################################################################}
+{% block to_active_scriptwrappable %}
+{% if active_scriptwrappable %}
+ActiveScriptWrappable* {{v8_class}}::toActiveScriptWrappable(v8::Local<v8::Object> wrapper)
+{
+    return toImpl(wrapper);
+}
+
+{% endif %}
+{% endblock %}
+
+
+{##############################################################################}
 {% block ref_object_and_deref_object %}
 void {{v8_class}}::refObject(ScriptWrappable* scriptWrappable)
 {