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 9f7f877601d169d29be6c48ac521203f303b44f9..0d93a44fab0452f13e6564490f0395ceaf975c86 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -2055,6 +2055,11 @@ 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";