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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef SYNC_INTERNAL_API_PUBLIC_SYNC_AUTH_PROVIDER_H_
      6 #define SYNC_INTERNAL_API_PUBLIC_SYNC_AUTH_PROVIDER_H_
      7 
      8 #include "base/callback.h"
      9 
     10 class GoogleServiceAuthError;
     11 
     12 namespace syncer {
     13 
     14 // SyncAuthProvider is interface to access token related functions from sync
     15 // engine.
     16 class SyncAuthProvider {
     17  public:
     18   typedef base::Callback<void(const GoogleServiceAuthError& error,
     19                               const std::string& token)> RequestTokenCallback;
     20 
     21   virtual ~SyncAuthProvider() {}
     22 
     23   // Request access token for sync. Callback will be called with error and
     24   // access token. If error is anything other than NONE then token is invalid.
     25   virtual void RequestAccessToken(const RequestTokenCallback& callback) = 0;
     26 
     27   // Invalidate access token that was rejected by sync server.
     28   virtual void InvalidateAccessToken(const std::string& token) = 0;
     29 };
     30 
     31 }  // namespace syncer
     32 
     33 #endif  // SYNC_INTERNAL_API_PUBLIC_SYNC_AUTH_PROVIDER_H_
     34