Merge 117012

Source/WebCore/bindings/v8/NPV8Object.cpp

 /*
  * Copyright (C) 2004, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2007, 2008, 2009 Google, 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 318 matching lines @@
         filename = "npscript";
 
     String script = String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Length);
 
     UserGestureIndicator gestureIndicator(popupsAllowed ? DefinitelyProcessingUserGesture : PossiblyProcessingUserGesture);
     v8::Local<v8::Value> v8result = proxy->evaluate(ScriptSourceCode(script, KURL(ParsedURLString, filename)), 0);
 
     if (v8result.IsEmpty())
         return false;
 
-    convertV8ObjectToNPVariant(v8result, npObject, result);
+    if (_NPN_IsAlive(npObject))
+        convertV8ObjectToNPVariant(v8result, npObject, result);
     return true;
 }
 
 bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NPVariant* result)
 {
     if (!npObject)
         return false;
 
     if (npObject->_class == npScriptObjectClass) {
         V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
@@ skipping 234 matching lines @@
 
         convertV8ObjectToNPVariant(resultObject, npObject, result);
         return true;
     }
 
     if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->construct)
         return npObject->_class->construct(npObject, arguments, argumentCount, result);
 
     return false;
 }