Remove some dead code.

chrome/browser/media_gallery/media_gallery_database.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_MEDIA_GALLERY_MEDIA_GALLERY_DATABASE_H_
-#define CHROME_BROWSER_MEDIA_GALLERY_MEDIA_GALLERY_DATABASE_H_
-
-#include "base/basictypes.h"
-#include "base/file_path.h"
-#include "chrome/browser/media_gallery/media_gallery_database_types.h"
-#include "sql/connection.h"
-#include "sql/init_status.h"
-#include "sql/meta_table.h"
-
-namespace chrome {
-
-// Encapsulates the SQL database that stores pre-parsed media gallery metadata
-// for search and retrieval.
-class MediaGalleryDatabase {
- public:
-  MediaGalleryDatabase();
-  virtual ~MediaGalleryDatabase();
-
-  // Must call this function to complete initialization. Will return true on
-  // success. On false, no other function should be called.
-  sql::InitStatus Init(const base::FilePath& database_path);
-
-  // Returns the current version that we will generate media gallery databases
-  // with.
-  static int GetCurrentVersion();
-
-  // Sets the id field of the input collection_row to the generated unique
-  // key value and returns the same. On failure, returns zero.
-  int CreateCollectionRow(CollectionRow* collection_row);
-
-  // Finds the row with the specified id and fills its data into the collection
-  // pointer passed by the caller. Returns true on success.
-  bool GetCollectionRow(CollectionId id, CollectionRow* collection);
-
- protected:
-  virtual sql::Connection& GetDB();
-
-  // Initializes an already open database.
-  sql::InitStatus InitInternal(sql::Connection* db);
-  static bool DoesCollectionsTableExist(sql::Connection* db);
-
- private:
-  static bool CreateCollectionsTable(sql::Connection* db);
-  sql::InitStatus EnsureCurrentVersion();
-  void FillCollectionRow(const sql::Statement& statement, CollectionRow* row);
-
-  sql::Connection db_;
-  sql::MetaTable meta_table_;
-
-  DISALLOW_COPY_AND_ASSIGN(MediaGalleryDatabase);
-};
-
-}  // namespace chrome
-
-std::ostream& operator<<(std::ostream& out, const chrome::CollectionRow& row);
-
-#endif  // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_GALLERY_DATABASE_H_