Rollback the rollback of r1806. Wasn't the cause of the test failure.

webkit/glue/plugins/plugin_list.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.
 
 // TODO: Need mechanism to cleanup the static instance
 
 #ifndef WEBKIT_GLUE_PLUGIN_PLUGIN_LIST_H__
 #define WEBKIT_GLUE_PLUGIN_PLUGIN_LIST_H__
 
 #include <string>
@@ skipping 133 matching lines @@
 
   // Hardcoded logic to detect and load quicktime plugins
   void LoadQuicktimePlugins();
 
   // Hardcoded logic to detect and load Windows Media Player plugins
   void LoadWindowsMediaPlugins();
 
   // Hardcoded logic to detect and load Java plugins
   void LoadJavaPlugin();
 
+#if defined(OS_WIN)
   // Search the registry at the given path and load plugins listed there.
   void LoadPluginsInRegistryFolder(HKEY root_key,
                                    const std::wstring& registry_folder);
+#endif
 
   // true if we shouldn't load the new WMP plugin.
   bool dont_load_new_wmp_;
 
   bool use_internal_activex_shim_;
 
   static scoped_refptr<PluginList> singleton_;
   bool plugins_loaded_;
   std::vector<scoped_refptr<PluginLib> > plugins_;
 
   DISALLOW_EVIL_CONSTRUCTORS(PluginList);
 };
 
 } // namespace NPAPI
 
 #endif  // WEBKIT_GLUE_PLUGIN_PLUGIN_LIST_H__