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

components/sync/model/metadata_batch.h

Index: components/sync/model/metadata_batch.h
diff --git a/components/sync/api/metadata_batch.h b/components/sync/model/metadata_batch.h
similarity index 90%
rename from components/sync/api/metadata_batch.h
rename to components/sync/model/metadata_batch.h
index 01393a32b283453cf5bc721bfbc0dcb5cd0575a1..03a94d8f796976e0308f04f483ae7cc68981dbe1 100644
--- a/components/sync/api/metadata_batch.h
+++ b/components/sync/model/metadata_batch.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_SYNC_API_METADATA_BATCH_H_
-#define COMPONENTS_SYNC_API_METADATA_BATCH_H_
+#ifndef COMPONENTS_SYNC_MODEL_METADATA_BATCH_H_
+#define COMPONENTS_SYNC_MODEL_METADATA_BATCH_H_
 
 #include <map>
 #include <string>
@@ -44,4 +44,4 @@ class MetadataBatch {
 
 }  // namespace syncer
 
-#endif  // COMPONENTS_SYNC_API_METADATA_BATCH_H_
+#endif  // COMPONENTS_SYNC_MODEL_METADATA_BATCH_H_