Migrate the IndexedDB backend from Blink to Chromium

content/browser/indexed_db/leveldb/leveldb_comparator.h

Index: content/browser/indexed_db/leveldb/leveldb_comparator.h
diff --git a/content/browser/indexed_db/leveldb/leveldb_comparator.h b/content/browser/indexed_db/leveldb/leveldb_comparator.h
new file mode 100644
index 0000000000000000000000000000000000000000..52be213462e4d4cba0733a07a4d515adbc069d9b
--- /dev/null
+++ b/content/browser/indexed_db/leveldb/leveldb_comparator.h
@@ -0,0 +1,24 @@
+// Copyright (c) 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.
+
+#ifndef CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_COMPARATOR_H_
+#define CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_COMPARATOR_H_
+
+#include "base/string16.h"
+
+namespace content {
+
+class LevelDBSlice;
+
+class LevelDBComparator {
+ public:
+  virtual ~LevelDBComparator() {}
+
+  virtual int Compare(const LevelDBSlice&, const LevelDBSlice&) const = 0;
+  virtual const char* Name() const = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_COMPARATOR_H_