IndexedDB: Convert decoding functions to pass StringPieces vs. pointers

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 <set>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/indexed_db/leveldb/avltree.h"
 #include "content/browser/indexed_db/leveldb/leveldb_comparator.h"
 #include "content/browser/indexed_db/leveldb/leveldb_database.h"
 #include "content/browser/indexed_db/leveldb/leveldb_iterator.h"
 #include "content/browser/indexed_db/leveldb/leveldb_slice.h"
 
 namespace content {
 
 class LevelDBWriteBatch;
 
 class CONTENT_EXPORT LevelDBTransaction
     : public base::RefCounted<LevelDBTransaction> {
  public:
   static scoped_refptr<LevelDBTransaction> Create(LevelDBDatabase* db);
 
   void Put(const LevelDBSlice& key, const std::vector<char>& value);
   void Remove(const LevelDBSlice& key);
-  bool Get(const LevelDBSlice& key, std::vector<char>& value, bool& found);
+  bool Get(const LevelDBSlice& key, std::string* value, bool& found);
   bool Commit();
   void Rollback();
 
   scoped_ptr<LevelDBIterator> CreateIterator();
 
  private:
   explicit LevelDBTransaction(LevelDBDatabase* db);
   virtual ~LevelDBTransaction();
   friend class base::RefCounted<LevelDBTransaction>;
 
@@ skipping 129 matching lines @@
   explicit LevelDBWriteOnlyTransaction(LevelDBDatabase* db);
 
   LevelDBDatabase* db_;
   scoped_ptr<LevelDBWriteBatch> write_batch_;
   bool finished_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_TRANSACTION_H_