[Sync] Renaming sync/api* to sync/model*.

BUG=654101

Review-Url: https://codereview.chromium.org/2401223002
Cr-Commit-Position: refs/heads/master@{#424184}
diff --git a/extensions/browser/app_sorting.h b/extensions/browser/app_sorting.h
index 12c9920d..8053563 100644
--- a/extensions/browser/app_sorting.h
+++ b/extensions/browser/app_sorting.h
@@ -10,7 +10,7 @@
 #include <string>
 
 #include "base/macros.h"
-#include "components/sync/api/string_ordinal.h"
+#include "components/sync/model/string_ordinal.h"
 #include "extensions/common/extension.h"
 
 namespace extensions {