Improve IDB module's SecurityError messages.

Source/modules/notifications/Notification.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 18 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
 #if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
 
 #include "modules/notifications/Notification.h"
 
 #include "bindings/v8/Dictionary.h"
+#include "bindings/v8/ExceptionMessages.h"
 #include "bindings/v8/ExceptionState.h"
 #include "core/dom/Document.h"
 #include "core/dom/ErrorEvent.h"
 #include "core/dom/EventNames.h"
 #include "core/loader/ThreadableLoader.h"
 #include "core/page/DOMWindow.h"
 #include "core/page/WindowFocusAllowedIndicator.h"
 #include "core/platform/network/ResourceRequest.h"
 #include "core/platform/network/ResourceResponse.h"
 #include "core/workers/WorkerGlobalScope.h"
@@ skipping 14 matching lines @@
 #if ENABLE(LEGACY_NOTIFICATIONS)
 Notification::Notification(const String& title, const String& body, const String& iconURI, ScriptExecutionContext* context, ExceptionState& es, PassRefPtr<NotificationCenter> provider)
     : ActiveDOMObject(context)
     , m_title(title)
     , m_body(body)
     , m_state(Idle)
     , m_notificationCenter(provider)
 {
     ScriptWrappable::init(this);
     if (m_notificationCenter->checkPermission() != NotificationClient::PermissionAllowed) {
-        es.throwDOMException(SecurityError);
+        es.throwSecurityError("Failed to create Notification: permission denied.");
         return;
     }
 
     m_icon = iconURI.isEmpty() ? KURL() : scriptExecutionContext()->completeURL(iconURI);
     if (!m_icon.isEmpty() && !m_icon.isValid()) {
         es.throwDOMException(SyntaxError);
         return;
     }
 }
 #endif
@@ skipping 174 matching lines @@
 void Notification::requestPermission(ScriptExecutionContext* context, PassRefPtr<NotificationPermissionCallback> callback)
 {
     ASSERT(toDocument(context)->page());
     NotificationController::from(toDocument(context)->page())->client()->requestPermission(context, callback);
 }
 #endif
 
 } // namespace WebCore
 
 #endif // ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)