Componentize profile_sync_auth_provider

chrome/browser/sync/profile_sync_auth_provider.h

-// Copyright 2014 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_SYNC_PROFILE_SYNC_AUTH_PROVIDER_H_
-#define CHROME_BROWSER_SYNC_PROFILE_SYNC_AUTH_PROVIDER_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "google_apis/gaia/oauth2_token_service.h"
-#include "sync/internal_api/public/sync_auth_provider.h"
-
-class ProfileOAuth2TokenService;
-
-namespace base {
-class SingleThreadTaskRunner;
-}  // namespace base
-
-// ProfileSyncAuthProvider implements function for SyncAuthProvider. It doesn't
-// inherit from SyncAuthProvider because it lives on UI thread while requests
-// originate from sync thread. SyncThreadProxy implements SyncAuthProvider and
-// forwards all requests.
-class ProfileSyncAuthProvider : public OAuth2TokenService::Consumer,
-                                public base::NonThreadSafe {
- public:
-  ProfileSyncAuthProvider(ProfileOAuth2TokenService* token_service,
-                          const std::string& account_id,
-                          const std::string& scope);
-  ~ProfileSyncAuthProvider() override;
-
-  // OAuth2TokenService::Consumer implementation.
-  void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
-                         const std::string& access_token,
-                         const base::Time& expiration_time) override;
-  void OnGetTokenFailure(const OAuth2TokenService::Request* request,
-                         const GoogleServiceAuthError& error) override;
-
-  // Request access token from OAuth2TokenService. Once access token is received
-  // result should be posted to callback on task_runner thread.
-  void RequestAccessToken(
-      const syncer::SyncAuthProvider::RequestTokenCallback& callback,
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
-
-  void InvalidateAccessToken(const std::string& token);
-
-  scoped_ptr<syncer::SyncAuthProvider> CreateProviderForSyncThread();
-
- private:
-  class SyncThreadProxy;
-
-  void RespondToTokenRequest(const GoogleServiceAuthError& error,
-                             const std::string& token);
-
-  ProfileOAuth2TokenService* token_service_;
-  std::string account_id_;
-  OAuth2TokenService::ScopeSet oauth2_scope_;
-
-  // Only one outstanding request is allowed. Previous request is reported
-  // cancelled if new one arrives.
-  scoped_ptr<OAuth2TokenService::Request> access_token_request_;
-  syncer::SyncAuthProvider::RequestTokenCallback request_token_callback_;
-  scoped_refptr<base::SingleThreadTaskRunner> callback_task_runner_;
-
-  base::WeakPtrFactory<ProfileSyncAuthProvider> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ProfileSyncAuthProvider);
-};
-
-#endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_AUTH_PROVIDER_H_