Don't delete leveldb directory if disk was full.

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 <vector>
 
@@ skipping 25 matching lines @@
   explicit LevelDBSnapshot(LevelDBDatabase* db);
   ~LevelDBSnapshot();
 
   leveldb::DB* db_;
   const leveldb::Snapshot* snapshot_;
 };
 
 class CONTENT_EXPORT LevelDBDatabase {
  public:
   static scoped_ptr<LevelDBDatabase> Open(const base::FilePath& file_name,
-                                          const LevelDBComparator* comparator);
+                                          const LevelDBComparator* comparator,
+                                          bool* is_disk_full = 0);
   static scoped_ptr<LevelDBDatabase> OpenInMemory(
       const LevelDBComparator* comparator);
   static bool Destroy(const base::FilePath& file_name);
   virtual ~LevelDBDatabase();
 
   bool Put(const LevelDBSlice& key, const std::vector<char>& value);
   bool Remove(const LevelDBSlice& key);
   virtual bool Get(const LevelDBSlice& key,
                    std::string* value,
                    bool* found,
@@ skipping 10 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_