ServiceWorker: Change the return value of ServiceWorkerRegistration::unregister to boolean (1/4)

Source/modules/serviceworkers/ServiceWorkerContainer.cpp

Index: Source/modules/serviceworkers/ServiceWorkerContainer.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
index f966de158b6a7b134acaf53c78bd0cc1b3b8990e..9bb62c1fe4d8d54d4c7f7de058d6b1dfd3a6ef24 100644
--- a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
@@ -141,6 +141,21 @@ private:
     UndefinedValue();
 };
 
+class BooleanValue {
+public:
+    typedef bool WebType;
+    static bool take(ScriptPromiseResolver* resolver, WebType* boolean)
+    {
+        return boolean;
+    }
+    static void dispose(WebType* boolean)
+    {
+    }
+
+private:
+    BooleanValue();
+};
+
 ScriptPromise ServiceWorkerContainer::unregisterServiceWorker(ScriptState* scriptState, const String& pattern)
 {
     ASSERT(RuntimeEnabledFeatures::serviceWorkerEnabled());
@@ -167,8 +182,11 @@ ScriptPromise ServiceWorkerContainer::unregisterServiceWorker(ScriptState* scrip
         resolver->reject(DOMException::create(SecurityError, "The scope must match the current origin."));
         return promise;
     }
-
+#ifdef SERVICEWORKER_UNREGISTER_DISABLE_NEW_FEATURE

[nhiroki, 2014/08/28 10:13:20]

"NEW_FEATURE" would be ambiguous. How about "_UNREGISTER_RESOLVE_TO_BOOLEAN" or
something else?

[shimazu, 2014/08/29 07:07:07]

Done.

     m_provider->unregisterServiceWorker(patternURL, new CallbackPromiseAdapter<UndefinedValue, ServiceWorkerError>(resolver));
+#else
+    m_provider->unregisterServiceWorker(patternURL, new CallbackPromiseAdapter<BooleanValue, ServiceWorkerError>(resolver));
+#endif
     return promise;
 }