Factor out PluginGroup into a separate class in common/.

chrome/browser/plugin_service.cc

 // Copyright (c) 2010 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.
 
 #include "build/build_config.h"
 
 #include "chrome/browser/plugin_service.h"
 
 #include "base/command_line.h"
 #include "base/path_service.h"
@@ skipping 42 matching lines @@
 #endif
 
 // static
 bool PluginService::enable_chrome_plugins_ = true;
 
 // static
 void PluginService::InitGlobalInstance(Profile* profile) {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
 
   // We first group the plugins and then figure out which groups to disable.
-  PluginUpdater::GetInstance()->DisablePluginGroupsFromPrefs(profile);
+  plugin_updater::DisablePluginGroupsFromPrefs(profile);
 
   // Have Chrome plugins write their data to the profile directory.
   GetInstance()->SetChromePluginDataDir(profile->GetPath());
 }
 
 // static
 PluginService* PluginService::GetInstance() {
   return Singleton<PluginService>::get();
 }
 
@@ skipping 297 matching lines @@
     info.mime_types = ASCIIToWide(JoinString(plugins[i].mime_types, '|'));
 
     // These NPAPI entry points will never be called.  TODO(darin): Come up
     // with a cleaner way to register pepper plugins with the NPAPI PluginList,
     // or perhaps refactor the PluginList to be less specific to NPAPI.
     memset(&info.entry_points, 0, sizeof(info.entry_points));
 
     NPAPI::PluginList::Singleton()->RegisterInternalPlugin(info);
   }
 }