Merge 97667 - Re-landing: window.webkitNotifications uses deallocated NotificationPresenter after...

Source/WebCore/notifications/NotificationCenter.cpp

Index: Source/WebCore/notifications/NotificationCenter.cpp
===================================================================
--- Source/WebCore/notifications/NotificationCenter.cpp	(revision 97673)
+++ Source/WebCore/notifications/NotificationCenter.cpp	(working copy)
@@ -61,9 +61,8 @@
 
 void NotificationCenter::disconnectFrame()
 {
-    // m_notificationPresenter should never be 0. But just to be safe, we check it here.
-    // Due to the mysterious bug http://code.google.com/p/chromium/issues/detail?id=49323.
-    ASSERT(m_notificationPresenter);
+    // Can be 0 if iframe was transferred into another page. In this case
+    // this method is invoked more then once.
     if (!m_notificationPresenter)
         return;
     m_notificationPresenter->cancelRequestsForPermission(scriptExecutionContext());