[Sync] Add auto-generated ModelType in Java.

sync/android/sync_jni_registrar.h

Index: sync/android/sync_jni_registrar.h
diff --git a/sync/android/sync_jni_registrar.h b/sync/android/sync_jni_registrar.h
new file mode 100644
index 0000000000000000000000000000000000000000..5a136804a03eb58417559715a5f7abd6c2aa7bb7
--- /dev/null
+++ b/sync/android/sync_jni_registrar.h
@@ -0,0 +1,18 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SYNC_JNI_REGISTRAR_H_
+#define SYNC_JNI_REGISTRAR_H_
+
+#include <jni.h>
+
+#include "sync/base/sync_export.h"
+
+namespace syncer {
+
+SYNC_EXPORT bool RegisterSyncJni(JNIEnv* env);
+
+}
+
+#endif  // SYNC_JNI_REGISTRAR_H_