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

chrome/browser/extensions/settings/settings_sync_util.h

Index: chrome/browser/extensions/settings/settings_sync_util.h
diff --git a/chrome/browser/extensions/settings/settings_sync_util.h b/chrome/browser/extensions/settings/settings_sync_util.h
index dede098137345b39b8d9f0b91d1017d641ec31b1..33b026c9e4f9fe684bb4e6b9165741ae7dd1a14c 100644
--- a/chrome/browser/extensions/settings/settings_sync_util.h
+++ b/chrome/browser/extensions/settings/settings_sync_util.h
@@ -23,27 +23,27 @@ syncer::SyncData CreateData(
     const std::string& extension_id,
     const std::string& key,
     const base::Value& value,
-    syncable::ModelType type);
+    syncer::ModelType type);
 
 // Creates an "add" sync change for an extension or app setting.
 syncer::SyncChange CreateAdd(
     const std::string& extension_id,
     const std::string& key,
     const base::Value& value,
-    syncable::ModelType type);
+    syncer::ModelType type);
 
 // Creates an "update" sync change for an extension or app setting.
 syncer::SyncChange CreateUpdate(
     const std::string& extension_id,
     const std::string& key,
     const base::Value& value,
-    syncable::ModelType type);
+    syncer::ModelType type);
 
 // Creates a "delete" sync change for an extension or app setting.
 syncer::SyncChange CreateDelete(
     const std::string& extension_id,
     const std::string& key,
-    syncable::ModelType type);
+    syncer::ModelType type);
 
 }  // namespace settings_sync_util