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diff --git a/chromium/components/webdata/common/web_database.h b/chromium/components/webdata/common/web_database.h
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+++ b/chromium/components/webdata/common/web_database.h
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+// 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 COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_H_
+#define COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_H_
+
+#include <map>
+
+#include "base/memory/scoped_ptr.h"
+#include "components/webdata/common/web_database_table.h"
+#include "components/webdata/common/webdata_export.h"
+#include "sql/connection.h"
+#include "sql/init_status.h"
+#include "sql/meta_table.h"
+
+namespace base {
+class FilePath;
+}
+
+// This class manages a SQLite database that stores various web page meta data.
+class WEBDATA_EXPORT WebDatabase {
+ public:
+  enum State {
+    COMMIT_NOT_NEEDED,
+    COMMIT_NEEDED
+  };
+  // Exposed publicly so the keyword table can access it.
+  static const int kCurrentVersionNumber;
+
+  WebDatabase();
+  virtual ~WebDatabase();
+
+  // Adds a database table. Ownership remains with the caller, which
+  // must ensure that the lifetime of |table| exceeds this object's
+  // lifetime. Must only be called before Init.
+  void AddTable(WebDatabaseTable* table);
+
+  // Retrieves a table based on its |key|.
+  WebDatabaseTable* GetTable(WebDatabaseTable::TypeKey key);
+
+  // Initialize the database given a name. The name defines where the SQLite
+  // file is. If this returns an error code, no other method should be called.
+  //
+  // Before calling this method, you must call AddTable for any
+  // WebDatabaseTable objects that are supposed to participate in
+  // managing the database.
+  sql::InitStatus Init(const base::FilePath& db_name);
+
+  // Transactions management
+  void BeginTransaction();
+  void CommitTransaction();
+
+  // Exposed for testing only.
+  sql::Connection* GetSQLConnection();
+
+ private:
+  // Used by |Init()| to migration database schema from older versions to
+  // current version.
+  sql::InitStatus MigrateOldVersionsAsNeeded();
+
+  sql::Connection db_;
+  sql::MetaTable meta_table_;
+
+  // Map of all the different tables that have been added to this
+  // object. Non-owning.
+  typedef std::map<WebDatabaseTable::TypeKey, WebDatabaseTable*> TableMap;
+  TableMap tables_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebDatabase);
+};
+
+#endif  // COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_H_