[Sync] Move ModelType and related classes to 'syncer' namespace

chrome/common/chrome_notification_types.h

Index: chrome/common/chrome_notification_types.h
diff --git a/chrome/common/chrome_notification_types.h b/chrome/common/chrome_notification_types.h
index 6990616031da3f03d47c9aac028daf6ce9ce0905..44deed4060115ca1a5e761c9668fc76a91459b35 100644
--- a/chrome/common/chrome_notification_types.h
+++ b/chrome/common/chrome_notification_types.h
@@ -802,13 +802,13 @@ enum NotificationType {
   NOTIFICATION_SYNC_CONFIGURE_DONE,
 
   // A service is requesting a sync datatype refresh for the current profile.
-  // The details value is a const syncable::ModelTypePayloadMap.
+  // The details value is a const syncer::ModelTypePayloadMap.
   // If the payload map is empty, it should be treated as an invalidation for
   // all enabled types. This is used by session sync.
   NOTIFICATION_SYNC_REFRESH_LOCAL,
 
   // External notification requesting a sync datatype refresh for the current
-  // profile. The details value is a const syncable::ModelTypePayloadMap.
+  // profile. The details value is a const syncer::ModelTypePayloadMap.
   // If the payload map is empty, it should be treated as an invalidation for
   // all enabled types. This is used for notifications on Android.
   NOTIFICATION_SYNC_REFRESH_REMOTE,