Tray message changed for child accounts. Warning bubble removed for child accounts.

ash/system/tray/default_system_tray_delegate.cc

Index: ash/system/tray/default_system_tray_delegate.cc
diff --git a/ash/system/tray/default_system_tray_delegate.cc b/ash/system/tray/default_system_tray_delegate.cc
index 2d4f3856d8216a5362025de9e5c6295fbe9bab96..e56f6424792f39b1fc15caa7b95c8e535cce7d64 100644
--- a/ash/system/tray/default_system_tray_delegate.cc
+++ b/ash/system/tray/default_system_tray_delegate.cc
@@ -86,6 +86,10 @@ bool DefaultSystemTrayDelegate::IsUserSupervised() const {
   return GetUserLoginStatus() == ash::user::LOGGED_IN_SUPERVISED;
 }
 
+bool DefaultSystemTrayDelegate::IsUserChild() const {
+  return false;
+}
+
 void DefaultSystemTrayDelegate::GetSystemUpdateInfo(UpdateInfo* info) const {
   DCHECK(info);
   info->severity = UpdateInfo::UPDATE_NORMAL;