Rewrite DTM to support dynamic data type configuration

chrome/common/notification_type.h

Index: chrome/common/notification_type.h
diff --git a/chrome/common/notification_type.h b/chrome/common/notification_type.h
index a321e0bfa991b4ddda0dd24128e6618301fe6624..026df5c78fa48ecd3151f33e752ad0147e0b5c9e 100644
--- a/chrome/common/notification_type.h
+++ b/chrome/common/notification_type.h
@@ -890,6 +890,12 @@ class NotificationType {
     // Sent when the sync backend has been resumed.
     SYNC_RESUMED,
 
+    // The sync service has started the configuration process.
+    SYNC_CONFIGURE_START,
+
+    // The sync service is finished the configuration process.
+    SYNC_CONFIGURE_DONE,
+
 #if defined(OS_CHROMEOS)
     // Sent when a chromium os user logs in.
     LOGIN_USER_CHANGED,