Update notification settings to allow for multiprofile situations.

ui/message_center/notifier_settings.cc

Index: ui/message_center/notifier_settings.cc
diff --git a/ui/message_center/notifier_settings.cc b/ui/message_center/notifier_settings.cc
index 85c6097bad4b7e9690da42b50399828e528cb05e..4355b9459fe28e9b7c23ede9eb4da0dae8eb446a 100644
--- a/ui/message_center/notifier_settings.cc
+++ b/ui/message_center/notifier_settings.cc
@@ -50,8 +50,15 @@ Notifier::Notifier(const NotifierId& notifier_id,
 Notifier::~Notifier() {
 }
 
-std::string ToString(
-    NotifierId::SystemComponentNotifierType type) {
+NotifierGroup::NotifierGroup(const gfx::Image& icon,
+                             const string16& name,
+                             const string16& login_info,
+                             size_t index)
+    : icon(icon), name(name), login_info(login_info), index(index) {}
+
+NotifierGroup::~NotifierGroup() {}
+
+std::string ToString(NotifierId::SystemComponentNotifierType type) {
   switch (type) {
     case NotifierId::SCREENSHOT:
       return "screenshot";