Return a list of plugins that support clearing site data instead of the first one.

content/public/browser/plugin_data_remover.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 CONTENT_PUBLIC_BROWSER_PLUGIN_DATA_REMOVER_H_
 #define CONTENT_PUBLIC_BROWSER_PLUGIN_DATA_REMOVER_H_
 #pragma once
 
+#include <vector>
+
 #include "base/time.h"
 #include "content/common/content_export.h"
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace webkit {
 struct WebPluginInfo;
 }
 
 namespace content {
 
 class BrowserContext;
 
 class CONTENT_EXPORT PluginDataRemover {
  public:
   static PluginDataRemover* Create(content::BrowserContext* browser_context);
   virtual ~PluginDataRemover() {}
 
   // Starts removing plug-in data stored since |begin_time|.
   virtual base::WaitableEvent* StartRemoving(base::Time begin_time) = 0;
 
-  // Returns whether there is a plug-in installed that supports removing LSO
-  // data. If it returns true |plugin| is also set to that plugin. This method
+  // Returns a list of all plug-ins that support removing LSO data. This method
   // will use cached plugin data. Call PluginService::GetPlugins() if the latest
   // data is needed.
-  static bool IsSupported(webkit::WebPluginInfo* plugin);
+  static void GetSupportedPlugins(std::vector<webkit::WebPluginInfo>* plugins);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PLUGIN_DATA_REMOVER_H_