Expose the Website Settings page in the Content Setting page if it is enabled via flag.

chrome/browser/content_settings/host_content_settings_map.cc

Index: chrome/browser/content_settings/host_content_settings_map.cc
diff --git a/chrome/browser/content_settings/host_content_settings_map.cc b/chrome/browser/content_settings/host_content_settings_map.cc
index 40b6fe1be7a169aa97e859c6fa75061111824b90..5cb97504afbcf6f9addb91385151dfa5b17f7c8e 100644
--- a/chrome/browser/content_settings/host_content_settings_map.cc
+++ b/chrome/browser/content_settings/host_content_settings_map.cc
@@ -201,10 +201,6 @@ ContentSetting HostContentSettingsMap::GetDefaultContentSetting(
     }
   }
 
-  // The method GetDefaultContentSetting always has to return an explicit
-  // value that is to be used as default. We here rely on the
-  // DefaultProvider to always provide a value.
-  NOTREACHED();
   return CONTENT_SETTING_DEFAULT;
 }