Make PermissionManager use ContentSettingsType internally more

chrome/browser/permissions/permission_util.h

 // Copyright 2015 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_PERMISSIONS_PERMISSION_UTIL_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_UTIL_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 22 matching lines @@
 
   // Always keep this at the end.
   PERMISSION_ACTION_NUM,
 };
 
 // A utility class for permissions.
 class PermissionUtil {
  public:
   // Returns the permission string for the given permission.
   static std::string GetPermissionString(ContentSettingsType);
-  // TODO(timloh): Remove this content::PermissionType overload when we add MIDI
-  // to ContentSettingsType.
-  static std::string GetPermissionString(content::PermissionType);
 
   // Return the stringified version of the ContentSettingsType enum that
   // Safe Browsing uses for the API Blacklist.
   static std::string ConvertContentSettingsTypeToSafeBrowsingName(
       ContentSettingsType permission);
 
   // Returns the request type corresponding to a permission type.
   static PermissionRequestType GetRequestType(ContentSettingsType permission);
 
   // Returns the gesture type corresponding to whether a permission request is
@@ skipping 36 matching lines @@
     ContentSettingsType content_type_;
     PermissionSourceUI source_ui_;
     bool is_initially_allowed_;
   };
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PermissionUtil);
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_UTIL_H_