gdata: Fix a bug in GDataLevelDB where errors are not handled right

chrome/browser/chromeos/gdata/gdata_leveldb.h

 // Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_GDATA_GDATA_LEVELDB_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_LEVELDB_H_
 #pragma once
 
 #include <leveldb/db.h>
 #include <string>
@@ skipping 14 matching lines @@
 
   // GDataDB implementation.
   virtual Status Put(const GDataEntry& file) OVERRIDE;
   virtual Status DeleteByResourceId(const std::string& resource_id) OVERRIDE;
   virtual Status DeleteByPath(const FilePath& path) OVERRIDE;
   virtual Status GetByResourceId(const std::string& resource_id,
                                  scoped_ptr<GDataEntry>* file) OVERRIDE;
   virtual Status GetByPath(const FilePath& path,
                            scoped_ptr<GDataEntry>* file) OVERRIDE;
   virtual scoped_ptr<GDataDBIter> CreateIterator(const FilePath& path) OVERRIDE;
+  virtual Status PutRawForTesting(
+      const std::string& resource_id,
+      const google::protobuf::MessageLite& protobuf) OVERRIDE;
 
   // Returns |resource_id| for |path| by looking up path_db_.
   Status ResourceIdForPath(const FilePath& path, std::string* resource_id);
 
   scoped_ptr<leveldb::DB> level_db_;
 };
 
 class GDataLevelDBIter : public GDataDBIter {
  public:
   GDataLevelDBIter(scoped_ptr<leveldb::Iterator> level_db_iter,
                    GDataDB* db, const FilePath& path);
  private:
   virtual ~GDataLevelDBIter();
 
   // GDataDBIter implementation.
   virtual bool GetNext(std::string* path,
                        scoped_ptr<GDataEntry>* entry) OVERRIDE;
 
   scoped_ptr<leveldb::Iterator> level_db_iter_;
   GDataDB* db_;
   const FilePath path_;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_LEVELDB_H_