[SyncFS] Move APIUtil constants to V2 directory.

chrome/browser/sync_file_system/drive_backend/drive_backend_util.cc

 // Copyright 2013 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 "chrome/browser/sync_file_system/drive_backend/drive_backend_util.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/drive/drive_api_util.h"
 #include "chrome/browser/sync_file_system/drive_backend/drive_backend_constants.h"
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.pb.h"
 #include "chrome/browser/sync_file_system/logger.h"
 #include "google_apis/drive/drive_api_parser.h"
 #include "google_apis/drive/gdata_wapi_parser.h"
 #include "net/base/mime_util.h"
 #include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
 
 namespace sync_file_system {
 namespace drive_backend {
 
-namespace {
-
-const char kMimeTypeOctetStream[] = "application/octet-stream";
-
-}  // namespace
-
 void PutServiceMetadataToBatch(const ServiceMetadata& service_metadata,
                                leveldb::WriteBatch* batch) {
   std::string value;
   bool success = service_metadata.SerializeToString(&value);
   DCHECK(success);
   batch->Put(kServiceMetadataKey, value);
 }
 
 void PutFileToBatch(const FileMetadata& file, leveldb::WriteBatch* batch) {
   std::string value;
@@ skipping 207 matching lines @@
 
   util::Log(logging::LOG_WARNING,
             FROM_HERE,
             "Got unexpected error: %d",
             static_cast<int>(error));
   return SYNC_STATUS_FAILED;
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system