Create signin component and componentize TokenWebData.

chrome/browser/webdata/token_web_data.h

-// Copyright 2013 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.
-
-// Chromium settings and storage represent user-selected preferences and
-// information and MUST not be extracted, overwritten or modified except
-// through Chromium defined APIs.
-
-#ifndef CHROME_BROWSER_WEBDATA_TOKEN_WEB_DATA_H__
-#define CHROME_BROWSER_WEBDATA_TOKEN_WEB_DATA_H__
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/callback_forward.h"
-#include "base/files/file_path.h"
-#include "base/location.h"
-#include "base/memory/ref_counted.h"
-#include "components/webdata/common/web_data_results.h"
-#include "components/webdata/common/web_data_service_base.h"
-#include "components/webdata/common/web_data_service_consumer.h"
-#include "components/webdata/common/web_database.h"
-
-class TokenWebDataBackend;
-class WebDatabaseService;
-class WebDataServiceConsumer;
-
-namespace content {
-class BrowserContext;
-}
-
-// TokenWebData is a data repository for storage of authentication tokens.
-
-class TokenWebData : public WebDataServiceBase {
- public:
-  // Retrieve a WebDataService for the given context.
-  static scoped_refptr<TokenWebData> FromBrowserContext(
-      content::BrowserContext* context);
-
-  TokenWebData(scoped_refptr<WebDatabaseService> wdbs,
-               const ProfileErrorCallback& callback);
-
-  // Set a token to use for a specified service.
-  void SetTokenForService(const std::string& service,
-                          const std::string& token);
-
-  // Remove all tokens stored in the web database.
-  void RemoveAllTokens();
-
-  // Removes a token related to |service| from the web database.
-  void RemoveTokenForService(const std::string& service);
-
-  // Null on failure. Success is WDResult<std::vector<std::string> >
-  virtual Handle GetAllTokens(WebDataServiceConsumer* consumer);
-
- protected:
-  // For unit tests, passes a null callback.
-  TokenWebData();
-
-  virtual ~TokenWebData();
-
- private:
-  scoped_refptr<TokenWebDataBackend> token_backend_;
-
-  DISALLOW_COPY_AND_ASSIGN(TokenWebData);
-};
-
-#endif  // CHROME_BROWSER_WEBDATA_TOKEN_WEB_DATA_H__