Add UMA for the new generic permisison class

chrome/browser/media/midi_permission_infobar_delegate.h

 // Copyright 2013 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_MEDIA_MIDI_PERMISSION_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_MEDIA_MIDI_PERMISSION_INFOBAR_DELEGATE_H_
 
 #include <string>
-
 #include "chrome/browser/content_settings/permission_infobar_delegate.h"
+#include "chrome/common/content_settings_types.h"
 
 class GURL;
 class PermissionQueueController;
 class InfoBarService;
 
 // MidiPermissionInfoBarDelegates are created by the
 // MidiPermissionContext to control the display and handling of MIDI permission
 // infobars to the user.
 class MidiPermissionInfoBarDelegate : public PermissionInfobarDelegate {
  public:
   // Creates a MIDI permission infobar and delegate and adds the infobar to
   // |infobar_service|.  Returns the infobar if it was successfully added.
   static infobars::InfoBar* Create(InfoBarService* infobar_service,
                                    PermissionQueueController* controller,
                                    const PermissionRequestID& id,
                                    const GURL& requesting_frame,
-                                   const std::string& display_languages);
+                                   const std::string& display_languages,
+                                   ContentSettingsType type);
 
  private:
   MidiPermissionInfoBarDelegate(PermissionQueueController* controller,
                                 const PermissionRequestID& id,
                                 const GURL& requesting_frame,
                                 int contents_unique_id,
-                                const std::string& display_languages);
+                                const std::string& display_languages,
+                                ContentSettingsType type);
   virtual ~MidiPermissionInfoBarDelegate();
 
   // ConfirmInfoBarDelegate:
   virtual base::string16 GetMessageText() const OVERRIDE;
   virtual int GetIconID() const OVERRIDE;
 
   GURL requesting_frame_;
   std::string display_languages_;
 
   DISALLOW_COPY_AND_ASSIGN(MidiPermissionInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_MIDI_PERMISSION_INFOBAR_DELEGATE_H_