Moving oauth code from host to base to allow code sharing between host and client.

remoting/host/oauth_token_getter_impl.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 REMOTING_HOST_OAUTH_TOKEN_GETTER_IMPL_H_
-#define REMOTING_HOST_OAUTH_TOKEN_GETTER_IMPL_H_
-
-#include <queue>
-
-#include "base/callback.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/time/time.h"
-#include "base/timer/timer.h"
-#include "google_apis/gaia/gaia_oauth_client.h"
-#include "remoting/host/oauth_token_getter.h"
-
-namespace net {
-class URLRequestContextGetter;
-}  // namespace net
-
-namespace remoting {
-
-// OAuthTokenGetter caches OAuth access tokens and refreshes them as needed.
-class OAuthTokenGetterImpl : public OAuthTokenGetter,
-                             public base::NonThreadSafe,
-                             public gaia::GaiaOAuthClient::Delegate {
- public:
-  OAuthTokenGetterImpl(std::unique_ptr<OAuthCredentials> oauth_credentials,
-                       const scoped_refptr<net::URLRequestContextGetter>&
-                           url_request_context_getter,
-                       bool auto_refresh);
-  ~OAuthTokenGetterImpl() override;
-
-  // OAuthTokenGetter interface.
-  void CallWithToken(
-      const OAuthTokenGetter::TokenCallback& on_access_token) override;
-  void InvalidateCache() override;
-
- private:
-  // gaia::GaiaOAuthClient::Delegate interface.
-  void OnGetTokensResponse(const std::string& user_email,
-                           const std::string& access_token,
-                           int expires_seconds) override;
-  void OnRefreshTokenResponse(const std::string& access_token,
-                              int expires_in_seconds) override;
-  void OnGetUserEmailResponse(const std::string& user_email) override;
-  void OnOAuthError() override;
-  void OnNetworkError(int response_code) override;
-
-  void NotifyCallbacks(Status status,
-                       const std::string& user_email,
-                       const std::string& access_token);
-  void RefreshOAuthToken();
-
-  std::unique_ptr<OAuthCredentials> oauth_credentials_;
-  std::unique_ptr<gaia::GaiaOAuthClient> gaia_oauth_client_;
-  scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
-
-  bool refreshing_oauth_token_ = false;
-  bool email_verified_ = false;
-  std::string oauth_access_token_;
-  base::Time auth_token_expiry_time_;
-  std::queue<OAuthTokenGetter::TokenCallback> pending_callbacks_;
-  std::unique_ptr<base::OneShotTimer> refresh_timer_;
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_OAUTH_TOKEN_GETTER_IMPL_H_