[SyncFS] Replace leveldb classes with LevelDBWrapper

chrome/browser/sync_file_system/drive_backend/leveldb_wrapper.h

 // Copyright 2014 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 CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_LEVELDB_WRAPPER_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_LEVELDB_WRAPPER_H_
 
 #include <map>
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/leveldatabase/src/include/leveldb/slice.h"
+#include "third_party/leveldatabase/src/include/leveldb/status.h"

[nhiroki, 2014/08/01 09:43:38]

Forward decl seems to work well.

[peria, 2014/08/04 03:13:43]

Done.

 
 namespace leveldb {
 class DB;
 class Iterator;
 class Slice;
-class Status;
 class WriteBatch;
 }
 
 namespace sync_file_system {
 namespace drive_backend {
 
 class SliceComparator {
  public:
   bool operator()(const leveldb::Slice& a, const leveldb::Slice& b) const {
     return a.compare(b) < 0;
@@ skipping 51 matching lines @@
   leveldb::Status Get(const std::string& key, std::string* value);
   scoped_ptr<Iterator> NewIterator();
 
   // Commits pending transactions to |db_| and clears cached transactions.
   // Returns true if the commitment succeeds.
   leveldb::Status Commit();
 
   // Clears pending transactions.
   void Clear();
 
-  leveldb::DB* GetLevelDBForTesting();
+  // TODO(peria): Rename this method to GetLevelDBForTesting, after removing
+  // usages of driva_backend::MigrateDatabaseFromVxToVy() under
+  // drive_backend_v1/.
+  leveldb::DB* GetLevelDB();
 
  private:
   scoped_ptr<leveldb::DB> db_;
 
   PendingOperationMap pending_;
 
   DISALLOW_COPY_AND_ASSIGN(LevelDBWrapper);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_LEVELDB_WRAPPER_H_