[Bindings] Create and use V8 context snapshots

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

 {% extends 'interface_base.cpp.tmpl' %}
 
 {##############################################################################}
 {% 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) {
   {% if getter.is_raises_exception %}
   ExceptionState exceptionState(info.GetIsolate(), ExceptionState::kIndexedGetterContext, "{{interface_name}}");
   {% endif %}
@@ skipping 902 matching lines @@
 }
 
 {% endblock %}
 
 
 {##############################################################################}
 {% block partial_interface %}
 {% if has_partial_interface %}
 {% if needs_runtime_enabled_installer %}
 InstallRuntimeEnabledFunction {{v8_class}}::install{{v8_class}}RuntimeEnabledFunction =
-    &{{v8_class}}::installRuntimeEnabledFeatures;
+    &{{v8_class}}::InstallRuntimeEnabledFeatures;
+InstallRuntimeEnabledOnTemplateFunction {{v8_class}}::install{{v8_class}}RuntimeEnabledOnTemplateFunction =
+    &{{v8_class}}::InstallRuntimeEnabledFeaturesOnTemplate;
 {% endif %}
 
 InstallTemplateFunction {{v8_class}}::install{{v8_class}}TemplateFunction =
     &{{v8_class}}::install{{v8_class}}Template;
 
 void {{v8_class}}::updateWrapperTypeInfo(
     InstallTemplateFunction installTemplateFunction,
     InstallRuntimeEnabledFunction installRuntimeEnabledFunction,
+    InstallRuntimeEnabledOnTemplateFunction installRuntimeEnabledOnTemplateFunction,
     PreparePrototypeAndInterfaceObjectFunction preparePrototypeAndInterfaceObjectFunction) {
   ALLOW_UNUSED_LOCAL(installRuntimeEnabledFunction);
 
   {{v8_class}}::install{{v8_class}}TemplateFunction =
       installTemplateFunction;
   {% if needs_runtime_enabled_installer %}
   CHECK(installRuntimeEnabledFunction);
+  CHECK(installRuntimeEnabledOnTemplateFunction);
   {{v8_class}}::install{{v8_class}}RuntimeEnabledFunction =
       installRuntimeEnabledFunction;
+  {{v8_class}}::install{{v8_class}}RuntimeEnabledOnTemplateFunction =
+      installRuntimeEnabledOnTemplateFunction;
   {% endif %}
   if (preparePrototypeAndInterfaceObjectFunction) {
     {{v8_class}}::wrapperTypeInfo.prepare_prototype_and_interface_object_function =
         preparePrototypeAndInterfaceObjectFunction;
   }
 }
 
 {% 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 %}