Move c/b/webdata/ code to components/webdata/

chrome/browser/webdata/web_database_table.h

-// Copyright (c) 2011 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_WEBDATA_WEB_DATABASE_TABLE_H_
-#define CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_
-
-#include "base/logging.h"
-
-namespace sql {
-class Connection;
-class MetaTable;
-}
-
-// An abstract base class representing a table within a WebDatabase.
-// Each table should subclass this, adding type-specific methods as needed.
-class WebDatabaseTable {
- public:
-  // To look up a WebDatabaseTable of a certain type from WebDatabase,
-  // we use a void* key, so that we can simply use the address of one
-  // of the type's statics.
-  typedef void* TypeKey;
-
-  // The object is not ready for use until Init() has been called.
-  WebDatabaseTable();
-  virtual ~WebDatabaseTable();
-
-  // Retrieves the TypeKey for the concrete subtype.
-  virtual TypeKey GetTypeKey() const = 0;
-
-  // Attempts to initialize the table and returns true if successful.
-  //
-  // The base class stores the members passed and always return true;
-  // subclasses may perform other initialization as needed.
-  virtual bool Init(sql::Connection* db, sql::MetaTable* meta_table);
-
-  // In order to encourage developers to think about sync when adding or
-  // or altering new tables, this method must be implemented. Please get in
-  // contact with the sync team if you believe you're making a change that they
-  // should be aware of (or if you could break something).
-  // TODO(andybons): Implement something more robust.
-  virtual bool IsSyncable() = 0;
-
-  // Migrates this table to |version|. Returns false if there was
-  // migration work to do and it failed, true otherwise.
-  //
-  // Implementations may set |*update_compatible_version| to true if
-  // the compatible version should be changed to |version|.
-  // Implementations should otherwise not modify this parameter.
-  virtual bool MigrateToVersion(int version,
-                                bool* update_compatible_version) = 0;
-
- protected:
-  // Non-owning. These are owned by WebDatabase, valid as long as that
-  // class exists. Since lifetime of WebDatabaseTable objects slightly
-  // exceeds that of WebDatabase, they should not be used in
-  // ~WebDatabaseTable.
-  sql::Connection* db_;
-  sql::MetaTable* meta_table_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(WebDatabaseTable);
-};
-
-#endif  // CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_