Remove unused code in google_apis/gaia

google_apis/gaia/oauth2_revocation_fetcher.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 GOOGLE_APIS_GAIA_OAUTH2_REVOCATION_FETCHER_H_
-#define GOOGLE_APIS_GAIA_OAUTH2_REVOCATION_FETCHER_H_
-
-#include <string>
-
-#include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
-#include "google_apis/gaia/oauth2_revocation_consumer.h"
-#include "googleurl/src/gurl.h"
-#include "net/url_request/url_fetcher_delegate.h"
-
-class OAuth2RevocationFetcherTest;
-
-namespace net {
-class URLFetcher;
-class URLRequestContextGetter;
-class URLRequestStatus;
-}
-
-// Abstracts the details to perform OAuth2 grant revocation.
-//
-// This class should be used on a single thread, but it can be whichever thread
-// that you like.
-// Also, do not reuse the same instance. Once Start() is called, the instance
-// should not be reused.
-//
-// Usage:
-// * Create an instance with a consumer.
-// * Call Start()
-// * The consumer passed in the constructor will be called on the same
-//   thread Start was called with the results.
-//
-// This class can handle one request at a time. To parallelize requests,
-// create multiple instances.
-class OAuth2RevocationFetcher : public net::URLFetcherDelegate {
- public:
-  OAuth2RevocationFetcher(OAuth2RevocationConsumer* consumer,
-                          net::URLRequestContextGetter* getter);
-  virtual ~OAuth2RevocationFetcher();
-
-  // Starts the flow with the given parameters.
-  // |access_token| should be an OAuth2 login scoped access token.
-  void Start(const std::string& access_token,
-             const std::string& client_id,
-             const std::string& origin);
-
-  void CancelRequest();
-
-  // Implementation of net::URLFetcherDelegate
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
-
- private:
-  enum State {
-    INITIAL,
-    REVOCATION_STARTED,
-    REVOCATION_DONE,
-    ERROR_STATE,
-  };
-
-  // Helper methods for the flow.
-  void StartRevocation();
-  void EndRevocation(const net::URLFetcher* source);
-
-  // Helper mehtods for reporting back results.
-  void OnRevocationSuccess();
-  void OnRevocationFailure(const GoogleServiceAuthError& error);
-
-  // Other helpers.
-  static GURL MakeRevocationUrl();
-  static std::string MakeRevocationHeader(const std::string& access_token);
-  static std::string MakeRevocationBody(const std::string& client_id,
-                                        const std::string& origin);
-
-  // State that is set during construction.
-  OAuth2RevocationConsumer* const consumer_;
-  net::URLRequestContextGetter* const getter_;
-  State state_;
-
-  // While a fetch is in progress.
-  scoped_ptr<net::URLFetcher> fetcher_;
-  std::string access_token_;
-  std::string client_id_;
-  std::string origin_;
-
-  friend class OAuth2RevocationFetcherTest;
-
-  DISALLOW_COPY_AND_ASSIGN(OAuth2RevocationFetcher);
-};
-
-#endif  // GOOGLE_APIS_GAIA_OAUTH2_REVOCATION_FETCHER_H_