[Do not commit] Track revocations in content_settings::Observer

chrome/browser/permissions/permission_uma_util.h

 // Copyright 2014 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_UMA_UTIL_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_UMA_UTIL_H_
 
 #include "base/logging.h"
 #include "base/macros.h"
+#include "components/content_settings/core/common/content_settings.h"
+#include "components/content_settings/core/common/content_settings_types.h"
 
+class ContentSettingsPattern;
 class GURL;
 class Profile;
 
 namespace content {
 enum class PermissionType;
 }  // namespace content
 
 // Provides a convenient way of logging UMA for permission related operations.
 class PermissionUmaUtil {
  public:
   static void PermissionRequested(content::PermissionType permission,
                                   const GURL& requesting_origin,
                                   const GURL& embedding_origin,
                                   Profile* profile);
   static void PermissionGranted(content::PermissionType permission,
                                 const GURL& requesting_origin);
   static void PermissionDenied(content::PermissionType permission,
                                const GURL& requesting_origin);
   static void PermissionDismissed(content::PermissionType permission,
                                   const GURL& requesting_origin);
   static void PermissionIgnored(content::PermissionType permission,
                                 const GURL& requesting_origin);
   static void PermissionRevoked(content::PermissionType permission,
                                 const GURL& revoked_origin);
 
+  static void OnContentsettingChanged(
+      Profile* profile,
+      const ContentSettingsPattern& primary_pattern,
+      const ContentSettingsPattern& secondary_pattern,
+      ContentSettingsType content_type,
+      ContentSetting previous_value);
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PermissionUmaUtil);
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_UMA_UTIL_H_