Use same base class for popup and plugin blocking UI

chrome/browser/content_settings/tab_specific_content_settings.h

 // Copyright (c) 2012 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_CONTENT_SETTINGS_TAB_SPECIFIC_CONTENT_SETTINGS_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_TAB_SPECIFIC_CONTENT_SETTINGS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 162 matching lines @@
   // Returns true if content blockage was indicated to the user.
   bool IsBlockageIndicated(ContentSettingsType content_type) const;
 
   void SetBlockageHasBeenIndicated(ContentSettingsType content_type);
 
   // Returns whether a particular kind of content has been allowed. Currently
   // only tracks cookies.
   bool IsContentAllowed(ContentSettingsType content_type) const;
 
   // Returns the names of plugins that have been blocked for this tab.
-  const base::string16 GetBlockedPluginNames() const;
+  const std::vector<base::string16>& blocked_plugin_names() const {
+    return blocked_plugin_names_;
+  }
 
   const GURL& media_stream_access_origin() const {
     return media_stream_access_origin_;
   }
 
   const std::string& media_stream_requested_audio_device() const {
     return media_stream_requested_audio_device_;
   }
 
   const std::string& media_stream_requested_video_device() const {
@@ skipping 254 matching lines @@
   std::string media_stream_requested_audio_device_;
   std::string media_stream_requested_video_device_;
 
   // Observer to watch for content settings changed.
   ScopedObserver<HostContentSettingsMap, content_settings::Observer> observer_;
 
   DISALLOW_COPY_AND_ASSIGN(TabSpecificContentSettings);
 };
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_TAB_SPECIFIC_CONTENT_SETTINGS_H_