Made IndexedDB's comparators public.

content/browser/indexed_db/leveldb/leveldb_database.h

 // 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_DATABASE_H_
 #define CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_DATABASE_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
 #include "content/common/content_export.h"
+#include "third_party/leveldatabase/src/include/leveldb/comparator.h"
 #include "third_party/leveldatabase/src/include/leveldb/status.h"
 
 namespace leveldb {
 class Comparator;
 class DB;
 class Env;
 class Snapshot;
 }
 
 namespace content {
@@ skipping 15 matching lines @@
   const leveldb::Snapshot* snapshot_;
 };
 
 class CONTENT_EXPORT LevelDBLock {
 public:
   virtual ~LevelDBLock() {}
 };
 
 class CONTENT_EXPORT LevelDBDatabase {
  public:
+  class ComparatorAdapter : public leveldb::Comparator {
+   public:
+    explicit ComparatorAdapter(const LevelDBComparator* comparator);
+
+    virtual int Compare(const leveldb::Slice& a,
+                        const leveldb::Slice& b) const OVERRIDE;
+
+    virtual const char* Name() const OVERRIDE;
+
+    virtual void FindShortestSeparator(std::string* start,
+                                       const leveldb::Slice& limit) const
+        OVERRIDE;
+    virtual void FindShortSuccessor(std::string* key) const OVERRIDE;
+
+   private:
+    const LevelDBComparator* comparator_;
+  };
+
   static leveldb::Status Open(const base::FilePath& file_name,
                               const LevelDBComparator* comparator,
                               scoped_ptr<LevelDBDatabase>* db,
                               bool* is_disk_full = 0);
   static scoped_ptr<LevelDBDatabase> OpenInMemory(
       const LevelDBComparator* comparator);
   static leveldb::Status Destroy(const base::FilePath& file_name);
   static scoped_ptr<LevelDBLock> LockForTesting(
       const base::FilePath& file_name);
   virtual ~LevelDBDatabase();
@@ skipping 17 matching lines @@
 
   scoped_ptr<leveldb::Env> env_;
   scoped_ptr<leveldb::Comparator> comparator_adapter_;
   scoped_ptr<leveldb::DB> db_;
   const LevelDBComparator* comparator_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_DATABASE_H_