Make iterating over a corrupted IndexedDB fail.

content/browser/indexed_db/leveldb/leveldb_transaction.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_TRANSACTION_H_
 #define CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_TRANSACTION_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 50 matching lines @@
   };
 
   typedef std::map<base::StringPiece, Record*, Comparator> DataType;
 
   class DataIterator : public LevelDBIterator {
    public:
     static scoped_ptr<DataIterator> Create(LevelDBTransaction* transaction);
     virtual ~DataIterator();
 
     virtual bool IsValid() const OVERRIDE;
-    virtual void SeekToLast() OVERRIDE;
-    virtual void Seek(const base::StringPiece& slice) OVERRIDE;
-    virtual void Next() OVERRIDE;
-    virtual void Prev() OVERRIDE;
+    virtual leveldb::Status SeekToLast() OVERRIDE;
+    virtual leveldb::Status Seek(const base::StringPiece& slice) OVERRIDE;
+    virtual leveldb::Status Next() OVERRIDE;
+    virtual leveldb::Status Prev() OVERRIDE;
     virtual base::StringPiece Key() const OVERRIDE;
     virtual base::StringPiece Value() const OVERRIDE;
     bool IsDeleted() const;
 
    private:
     explicit DataIterator(LevelDBTransaction* transaction);
     DataType* data_;
     DataType::iterator iterator_;
   };
 
   class TransactionIterator : public LevelDBIterator {
    public:
     virtual ~TransactionIterator();
     static scoped_ptr<TransactionIterator> Create(
         scoped_refptr<LevelDBTransaction> transaction);
 
     virtual bool IsValid() const OVERRIDE;
-    virtual void SeekToLast() OVERRIDE;
-    virtual void Seek(const base::StringPiece& target) OVERRIDE;
-    virtual void Next() OVERRIDE;
-    virtual void Prev() OVERRIDE;
+    virtual leveldb::Status SeekToLast() OVERRIDE;
+    virtual leveldb::Status Seek(const base::StringPiece& target) OVERRIDE;
+    virtual leveldb::Status Next() OVERRIDE;
+    virtual leveldb::Status Prev() OVERRIDE;
     virtual base::StringPiece Key() const OVERRIDE;
     virtual base::StringPiece Value() const OVERRIDE;
     void DataChanged();
 
    private:
     explicit TransactionIterator(scoped_refptr<LevelDBTransaction> transaction);
     void HandleConflictsAndDeletes();
     void SetCurrentIteratorToSmallestKey();
     void SetCurrentIteratorToLargestKey();
     void RefreshDataIterator() const;
@@ skipping 47 matching lines @@
   explicit LevelDBDirectTransaction(LevelDBDatabase* db);
 
   LevelDBDatabase* db_;
   scoped_ptr<LevelDBWriteBatch> write_batch_;
   bool finished_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_TRANSACTION_H_