binding: Supports preparePrototypeAndInterfaceObject on partial interfaces.

Supports V8<Type>Partial::preparePrototypeAndInterfaceObject.

BUG=

Review-Url: https://codereview.chromium.org/2620013002
Cr-Commit-Position: refs/heads/master@{#442846}

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

@@ -139,6 +139,8 @@ class {{v8_class}} {
   {% if unscopables or has_conditional_attributes_on_prototype or
         methods | conditionally_exposed(is_partial) %}
   {{exported}}static void preparePrototypeAndInterfaceObject(v8::Local<v8::Context>, const DOMWrapperWorld&, v8::Local<v8::Object> prototypeObject, v8::Local<v8::Function> interfaceObject, v8::Local<v8::FunctionTemplate> interfaceTemplate);
+  {% elif has_partial_interface %}
+  {{exported}}static void preparePrototypeAndInterfaceObject(v8::Local<v8::Context>, const DOMWrapperWorld&, v8::Local<v8::Object> prototypeObject, v8::Local<v8::Function> interfaceObject, v8::Local<v8::FunctionTemplate> interfaceTemplate) {}
   {% endif %}
   {% if has_partial_interface %}
   {{exported}}static void updateWrapperTypeInfo(InstallTemplateFunction, PreparePrototypeAndInterfaceObjectFunction);

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

@@ -16,7 +16,6 @@
 {% from 'methods.cpp.tmpl' import install_conditionally_enabled_methods with context %}
 {% if has_prepare_prototype_and_interface_object %}
 void {{v8_class_or_partial}}::preparePrototypeAndInterfaceObject(v8::Local<v8::Context> context, const DOMWrapperWorld& world, v8::Local<v8::Object> prototypeObject, v8::Local<v8::Function> interfaceObject, v8::Local<v8::FunctionTemplate> interfaceTemplate) {
-#error No one is currently using a partial interface with context-dependent properties.  If you\'re planning to use it, please consult with the binding team: <blink-reviews-bindings@chromium.org>
   {{v8_class}}::preparePrototypeAndInterfaceObject(context, world, prototypeObject, interfaceObject, interfaceTemplate);
   v8::Isolate* isolate = context->GetIsolate();
 {% if unscopables %}

third_party/WebKit/Source/bindings/tests/results/core/V8TestInterface2.h

@@ -44,6 +44,7 @@ class V8TestInterface2 {
   static void visitDOMWrapper(v8::Isolate*, ScriptWrappable*, const v8::Persistent<v8::Object>&);
   static void constructorCallback(const v8::FunctionCallbackInfo<v8::Value>&);
   static const int internalFieldCount = v8DefaultWrapperInternalFieldCount + 0;
+  CORE_EXPORT static void preparePrototypeAndInterfaceObject(v8::Local<v8::Context>, const DOMWrapperWorld&, v8::Local<v8::Object> prototypeObject, v8::Local<v8::Function> interfaceObject, v8::Local<v8::FunctionTemplate> interfaceTemplate) {}
   CORE_EXPORT static void updateWrapperTypeInfo(InstallTemplateFunction, PreparePrototypeAndInterfaceObjectFunction);
   CORE_EXPORT static void installV8TestInterface2Template(v8::Isolate*, const DOMWrapperWorld&, v8::Local<v8::FunctionTemplate> interfaceTemplate);
 

third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterfacePartial.cpp

@@ -429,7 +429,6 @@ void V8TestInterfacePartial::installOriginTrialPartialFeature(ScriptState* scrip
 }
 
 void V8TestInterfacePartial::preparePrototypeAndInterfaceObject(v8::Local<v8::Context> context, const DOMWrapperWorld& world, v8::Local<v8::Object> prototypeObject, v8::Local<v8::Function> interfaceObject, v8::Local<v8::FunctionTemplate> interfaceTemplate) {
-#error No one is currently using a partial interface with context-dependent properties.  If you\'re planning to use it, please consult with the binding team: <blink-reviews-bindings@chromium.org>
   V8TestInterface::preparePrototypeAndInterfaceObject(context, world, prototypeObject, interfaceObject, interfaceTemplate);
   v8::Isolate* isolate = context->GetIsolate();
   v8::Local<v8::Name> unscopablesSymbol(v8::Symbol::GetUnscopables(isolate));