binding: Reduces the binary size of binding's generated code.

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' %}
+
 
 {##############################################################################}
 {% block indexed_property_getter %}
 {% if indexed_property_getter and not indexed_property_getter.is_custom %}
 {% set getter = indexed_property_getter %}
 static void indexedPropertyGetter(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     {{cpp_class}}* impl = {{v8_class}}::toImpl(info.Holder());
     {% if getter.is_raises_exception %}
     ExceptionState exceptionState(ExceptionState::IndexedGetterContext, "{{interface_name}}", info.Holder(), info.GetIsolate());
@@ skipping 465 matching lines @@
 {% set active_scriptwrappable_inheritance =
     'InheritFromActiveScriptWrappable'
     if active_scriptwrappable else
     'NotInheritFromActiveScriptWrappable' %}
 // 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}}::trace, {{v8_class}}::traceWrappers, 0, {{v8_class}}::preparePrototypeAndInterfaceObject,{% if has_conditional_attributes_on_instance %} {{v8_class}}::installConditionallyEnabledProperties{% else %} nullptr{% endif %}, "{{interface_name}}", 0, WrapperTypeInfo::WrapperTypeObjectPrototype, WrapperTypeInfo::{{wrapper_class_id}}, WrapperTypeInfo::{{active_scriptwrappable_inheritance}}, WrapperTypeInfo::{{event_target_inheritance}}, WrapperTypeInfo::{{lifetime}} };
+const WrapperTypeInfo {{v8_class}}Constructor::wrapperTypeInfo = { gin::kEmbedderBlink, {{v8_class}}Constructor::domTemplate, {{v8_class}}::trace, {{v8_class}}::traceWrappers, 0, {{prepare_prototype_and_interface_object_func}}, "{{interface_name}}", 0, WrapperTypeInfo::WrapperTypeObjectPrototype, WrapperTypeInfo::{{wrapper_class_id}}, WrapperTypeInfo::{{active_scriptwrappable_inheritance}}, WrapperTypeInfo::{{event_target_inheritance}}, WrapperTypeInfo::{{lifetime}} };
 #if defined(COMPONENT_BUILD) && defined(WIN32) && COMPILER(CLANG)
 #pragma clang diagnostic pop
 #endif
 
 {{generate_constructor(named_constructor)}}
 v8::Local<v8::FunctionTemplate> {{v8_class}}Constructor::domTemplate(v8::Isolate* isolate, const DOMWrapperWorld& world)
 {
     static int domTemplateKey; // This address is used for a key to look up the dom template.
     V8PerIsolateData* data = V8PerIsolateData::from(isolate);
     v8::Local<v8::FunctionTemplate> result = data->findInterfaceTemplate(world, &domTemplateKey);
@@ skipping 345 matching lines @@
     return value->Is{{interface_name}}() ? toImpl(v8::Local<v8::Object>::Cast(value)) : nullptr;
 {% else %}
     return hasInstance(value, isolate) ? toImpl(v8::Local<v8::Object>::Cast(value)) : nullptr;
 {% endif %}
 }
 
 {% endblock %}
 
 
 {##############################################################################}
-{% block install_conditional_attributes %}
-{% from 'attributes.cpp' import attribute_configuration with context %}
-{% if has_conditional_attributes_on_instance %}
-void {{v8_class}}::installConditionallyEnabledProperties(v8::Local<v8::Object> instanceObject, v8::Isolate* isolate)
-{
-#error TODO(yukishiino): Rename this function to prepareInstanceObject (c.f. preparePrototypeAndInterfaceObject) and implement this function if necessary.  http://crbug.com/503508
-}
-
-{% endif %}
-{% endblock %}
-
-
-{##############################################################################}
 {% block prepare_prototype_and_interface_object %}
 {% from 'methods.cpp' import install_conditionally_enabled_methods with context %}
-{% if unscopeables or has_conditional_attributes_on_prototype or methods | conditionally_exposed(is_partial) %}
+{% if has_prepare_prototype_and_interface_object %}
 void {{v8_class}}::preparePrototypeAndInterfaceObject(v8::Local<v8::Context> context, const DOMWrapperWorld& world, v8::Local<v8::Object> prototypeObject, v8::Local<v8::Function> interfaceObject, v8::Local<v8::FunctionTemplate> interfaceTemplate)
 {
     v8::Isolate* isolate = context->GetIsolate();
 {% if unscopeables %}
     {{install_unscopeables() | indent}}
 {% endif %}
 {% if has_conditional_attributes_on_prototype %}
     {{install_conditionally_enabled_attributes_on_prototype() | indent}}
 {% endif %}
 {% if methods | conditionally_exposed(is_partial) %}
@@ skipping 54 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 %}