[Sync] Move model_type* from syncable/ to base/

sync/notifier/p2p_notifier_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "sync/notifier/p2p_notifier.h"
 
 #include <cstddef>
 
 #include "jingle/notifier/listener/fake_push_client.h"
-#include "sync/internal_api/public/syncable/model_type.h"
+#include "sync/internal_api/public/base/model_type.h"
 #include "sync/notifier/mock_sync_notifier_observer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 
 namespace {
 
 using ::testing::_;
 using ::testing::Mock;
 using ::testing::StrictMock;
@@ skipping 261 matching lines @@
   Mock::VerifyAndClearExpectations(&mock_observer_);
   p2p_notifier_.SendNotificationDataForTest(
       P2PNotificationData("sender2", NOTIFY_ALL, syncable::ModelTypeSet()));
 
   ReflectSentNotifications();
 }
 
 }  // namespace
 
 }  // namespace syncer