Convert the PluginService interface to be an async wrapper around PluginList.

chrome/browser/plugin_exceptions_table_model.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_PLUGIN_EXCEPTIONS_TABLE_MODEL_H_
 #define CHROME_BROWSER_PLUGIN_EXCEPTIONS_TABLE_MODEL_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/remove_rows_table_model.h"
 #include "content/common/notification_observer.h"
 #include "webkit/plugins/npapi/plugin_list.h"
 
+namespace webkit {
+namespace npapi {
+class PluginGroup;
+}
+}
+
 class PluginExceptionsTableModel : public RemoveRowsTableModel,
                                    public NotificationObserver {
  public:
   PluginExceptionsTableModel(HostContentSettingsMap* content_settings_map,
                              HostContentSettingsMap* otr_content_settings_map);
   virtual ~PluginExceptionsTableModel();
 
   // Load plugin exceptions from the HostContentSettingsMaps. You should call
   // this method after creating a new PluginExceptionsTableModel.
   void LoadSettings();
@@ skipping 46 matching lines @@
   bool updates_disabled_;
 
   // Weak, can be NULL. Our owner should manage its lifetime, see
   // TableModel::SetObserver().
   ui::TableModelObserver* observer_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginExceptionsTableModel);
 };
 
 #endif  // CHROME_BROWSER_PLUGIN_EXCEPTIONS_TABLE_MODEL_H_