This fixes http://code.google.com/p/chromium/issues/detail?id=2472, which...

chrome/plugin/npobject_stub.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // A class that receives IPC messages from an NPObjectProxy and calls the real
 // NPObject.
 
 #ifndef CHROME_PLUGIN_NPOBJECT_STUB_H__
 #define CHROME_PLUGIN_NPOBJECT_STUB_H__
 
@@ skipping 45 matching lines @@
                      NPVariant_Param* property,
                      bool* result);
   void OnSetProperty(const NPIdentifier_Param& name,
                      const NPVariant_Param& property,
                      bool* result);
   void OnRemoveProperty(const NPIdentifier_Param& name,
                         bool* result);
   void OnInvalidate();
   void OnEnumeration(std::vector<NPIdentifier_Param>* value,
                      bool* result);
-  void OnEvaluate(const std::string& script, IPC::Message* reply_msg);
+  void OnEvaluate(const std::string& script, bool popups_allowed,
+                  IPC::Message* reply_msg);
   void OnSetException(const std::string& message);
 
  private:
   NPObject* npobject_;
   int route_id_;
   scoped_refptr<PluginChannelBase> channel_;
 
   // These variables are used to ensure that the window script object is not
   // called after the plugin widget has gone away, as the frame manually
   // deallocates it and ignores the refcount to avoid leaks.
   bool valid_;
   WebPluginDelegateProxy* web_plugin_delegate_proxy_;
 };
 
 #endif  // CHROME_PLUGIN_NPOBJECT_STUB_H__