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

chrome/browser/content_settings/content_settings_supervised_provider.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/content_settings/content_settings_supervised_provider.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 64 matching lines @@
       }
       bool old_value = !value_map_.IsContentSettingEnabled(entry.content_type);
       if (new_value != old_value) {
         to_notify.push_back(entry.content_type);
         value_map_.SetContentSettingDisabled(entry.content_type, new_value);
       }
     }
   }
   for (const auto& notification : to_notify) {
     NotifyObservers(ContentSettingsPattern(), ContentSettingsPattern(),
-                    notification, std::string());
+                    notification, CONTENT_SETTING_DEFAULT, std::string());
   }
 }
 
 // Since the SupervisedProvider is a read only content settings provider, all
 // methods of the ProviderInterface that set or delete any settings do nothing.
 bool SupervisedProvider::SetWebsiteSetting(
     const ContentSettingsPattern& primary_pattern,
     const ContentSettingsPattern& secondary_pattern,
     ContentSettingsType content_type,
     const ResourceIdentifier& resource_identifier,
     base::Value* value) {
   return false;
 }
 
 void SupervisedProvider::ClearAllContentSettingsRules(
     ContentSettingsType content_type) {
 }
 
 void SupervisedProvider::ShutdownOnUIThread() {
   DCHECK(CalledOnValidThread());
   RemoveAllObservers();
   user_settings_subscription_.reset();
 }
 
 }  // namespace content_settings