Remove unused SQLLite tables from WebData

chrome/browser/webdata/web_apps_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_APPS_TABLE_H_
-#define CHROME_BROWSER_WEBDATA_WEB_APPS_TABLE_H_
-
-#include <vector>
-
-#include "base/compiler_specific.h"
-#include "components/webdata/common/web_database_table.h"
-
-class GURL;
-class SkBitmap;
-class WebDatabase;
-
-// This class manages the WebApps tables within the SQLite database passed to
-// the constructor. It expects the following schema:
-//
-// Note: The database stores time in seconds, UTC.
-//
-// web_apps
-//   url                 URL of the web app.
-//   has_all_images      Do we have all the images?
-//
-// web_app_icons
-//   url         URL of the web app.
-//   width       Width of the image.
-//   height      Height of the image.
-//   image       PNG encoded image data.
-//
-class WebAppsTable : public WebDatabaseTable {
- public:
-  WebAppsTable() {}
-  virtual ~WebAppsTable() {}
-
-  // Retrieves the WebAppsTable* owned by |database|.
-  static WebAppsTable* FromWebDatabase(WebDatabase* database);
-
-  virtual WebDatabaseTable::TypeKey GetTypeKey() const OVERRIDE;
-  virtual bool CreateTablesIfNecessary() OVERRIDE;
-  virtual bool IsSyncable() OVERRIDE;
-  virtual bool MigrateToVersion(int version,
-                                bool* update_compatible_version) OVERRIDE;
-
-  bool SetWebAppImage(const GURL& url, const SkBitmap& image);
-
-  // Returns true if all images are retrieved. Returns false if there is a
-  // database error. In this case, the state of images is undefined; it may have
-  // partial results or no results from the call.
-  bool GetWebAppImages(const GURL& url, std::vector<SkBitmap>* images);
-
-  bool SetWebAppHasAllImages(const GURL& url, bool has_all_images);
-  bool GetWebAppHasAllImages(const GURL& url);
-
-  bool RemoveWebApp(const GURL& url);
-
- private:
-  bool InitWebAppIconsTable();
-  bool InitWebAppsTable();
-
-  DISALLOW_COPY_AND_ASSIGN(WebAppsTable);
-};
-
-#endif  // CHROME_BROWSER_WEBDATA_WEB_APPS_TABLE_H_