Initial implementation of new-style notification

chrome/browser/flag_descriptions.cc

Index: chrome/browser/flag_descriptions.cc
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index c8a324b710a1c3c447abbe452838c826e132cf45..84472be3a0c5716afb01f6263214ebb78d964f23 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -2056,6 +2056,11 @@ const char kMessageCenterAlwaysScrollUpUponRemovalDescription[] =
     "Enables experiment that message center always scroll up when a "
     "notification is removed.";
 
+const char kMessageCenterNewStyleNotificationName[] = "New style notification";
+
+const char kMessageCenterNewStyleNotificationDescription[] =
+    "Enables the experiment style of material-design notification";
+
 const char kCastStreamingHwEncodingName[] =
     "Cast Streaming hardware video encoding";