Add an Error class for ServiceWorkers

Source/modules/serviceworkers/ServiceWorkerError.h

Index: Source/modules/serviceworkers/ServiceWorkerError.h
diff --git a/Source/platform/Task.h b/Source/modules/serviceworkers/ServiceWorkerError.h
similarity index 70%
copy from Source/platform/Task.h
copy to Source/modules/serviceworkers/ServiceWorkerError.h
index 8ef2339b1b4f4c80816774bb5b2b0bb19228bdd8..6aa5363f00f3a909ab428ae52285ad4445b7e9df 100644
--- a/Source/platform/Task.h
+++ b/Source/modules/serviceworkers/ServiceWorkerError.h
@@ -28,30 +28,34 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef Task_h
-#define Task_h
+#ifndef ServiceWorkerError_h
+#define ServiceWorkerError_h
 
-#include "public/platform/WebThread.h"
-#include "wtf/Functional.h"
+#include "core/dom/DOMError.h"
+#include "public/platform/WebServiceWorkerError.h"
 
 namespace WebCore {
 
-class Task : public WebKit::WebThread::Task {
+class ServiceWorkerError : public DOMError {
 public:
-    explicit Task(const Closure& closure)
-        : m_closure(closure)
+    static PassRefPtr<ServiceWorkerError> create(const String& name, const String& message)
     {
+        return adoptRef(new ServiceWorkerError(name, message));
     }
 
-    virtual void run() OVERRIDE
+    // For CallbackPromiseAdapter
+    typedef WebKit::WebServiceWorkerError WebType;
+    static PassRefPtr<DOMError> from(WebType* worker)

[michaeln, 2013/10/15 01:28:48]

looks like this should be returning a PassRefPtr<ServiceWorkerError>

|worker| as the param name is misleading 

     {
-        m_closure();
+        return create(worker->name(), worker->message());

[kinuko, 2013/10/15 01:43:09]

I'm a bit confused; does this imply WebServiceWorkerError's memory has to be
managed by the caller?

I.e. do you assume a usage like:

WebServiceWorkerErrorImpl error(name, message);
callbacks->onError(&error);

     }
 
+    ~ServiceWorkerError() { }
+
 private:
-    Closure m_closure;
+    ServiceWorkerError(const String& name, const String& message) : DOMError(name, message) { }
 };
 
 } // namespace WebCore
 
-#endif // Task_h
+#endif // ServiceWorkerError_h