Site Settings Desktop: Fix crash when altering exception.

chrome/browser/ui/webui/settings/site_settings_handler.h

 // Copyright 2016 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_UI_WEBUI_SETTINGS_SITE_SETTINGS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_SETTINGS_SITE_SETTINGS_HANDLER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 43 matching lines @@
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // content::HostZoomMap subscription.
   void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change);
 
  private:
   friend class SiteSettingsHandlerTest;
   FRIEND_TEST_ALL_PREFIXES(SiteSettingsHandlerTest, GetAndSetDefault);
   FRIEND_TEST_ALL_PREFIXES(SiteSettingsHandlerTest, Origins);
+  FRIEND_TEST_ALL_PREFIXES(SiteSettingsHandlerTest, ExceptionHelpers);
   FRIEND_TEST_ALL_PREFIXES(SiteSettingsHandlerTest, Patterns);
   FRIEND_TEST_ALL_PREFIXES(SiteSettingsHandlerTest, Incognito);
   FRIEND_TEST_ALL_PREFIXES(SiteSettingsHandlerTest, ZoomLevels);
 
   // Asynchronously fetches the usage for a given origin. Replies back with
   // OnGetUsageInfo above.
   void HandleFetchUsageTotal(const base::ListValue* args);
 
   // Deletes the storage being used for a given host.
   void HandleClearUsage(const base::ListValue* args);
@@ skipping 52 matching lines @@
 
   // Change observer for content settings.
   ScopedObserver<HostContentSettingsMap, content_settings::Observer> observer_;
 
   DISALLOW_COPY_AND_ASSIGN(SiteSettingsHandler);
 };
 
 }  // namespace settings
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SETTINGS_SITE_SETTINGS_HANDLER_H_