Remove all blimp client code.

blimp/client/core/session/identity_source.h

-// Copyright 2016 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 BLIMP_CLIENT_CORE_SESSION_IDENTITY_SOURCE_H_
-#define BLIMP_CLIENT_CORE_SESSION_IDENTITY_SOURCE_H_
-
-#include <memory>
-#include <string>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "blimp/client/public/blimp_client_context_delegate.h"
-#include "google_apis/gaia/identity_provider.h"
-#include "google_apis/gaia/oauth2_token_service.h"
-
-namespace blimp {
-namespace client {
-
-// IdentitySource handles OAuth2 token request and forward user sign in state
-// change to Blimp with ProfileIdentityProvider.
-class IdentitySource : public OAuth2TokenService::Consumer,
-                       public OAuth2TokenService::Observer,
-                       public IdentityProvider::Observer {
- public:
-  using TokenCallback = base::Callback<void(const std::string&)>;
-  using TokenErrorCallback =
-      base::Callback<void(const GoogleServiceAuthError&)>;
-
-  explicit IdentitySource(std::unique_ptr<IdentityProvider> identity_provider,
-                          const TokenErrorCallback& error_callback,
-                          const TokenCallback& callback);
-  ~IdentitySource() override;
-
-  // Start Blimp authentication by requesting OAuth2 token from Google.
-  // Duplicate connect calls during token fetching will be ignored.
-  void Connect();
-
-  // Returns the account name for the current user.
-  std::string GetActiveUsername();
-
-  // Add sign in state observer.
-  void AddObserver(IdentityProvider::Observer* observer);
-
-  // Remove sign in state observer.
-  void RemoveObserver(IdentityProvider::Observer* observer);
-
-  // 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;
-
-  // OAuth2TokenService::Observer implementation.
-  void OnRefreshTokenAvailable(const std::string& account_id) override;
-
- protected:
-  // Provide OAuth2 token service and listen to Google account sign in state,
-  // protected for testing.
-  std::unique_ptr<IdentityProvider> identity_provider_;
-
- private:
-  // Fetch OAuth token.
-  void FetchAuthToken();
-
-  // OAuth2 token request. The request is created when we start to fetch the
-  // access token in OAuth2TokenService::StartRequest, and destroyed when
-  // OAuth2TokenService::Consumer callback get called.
-  std::unique_ptr<OAuth2TokenService::Request> token_request_;
-
-  TokenErrorCallback error_callback_;
-
-  // Callback after OAuth2 token is fetched.
-  TokenCallback token_callback_;
-
-  // If we are fetching OAuth2 token. Connect call during token fetching will
-  // be ignored.
-  bool is_fetching_token_;
-
-  // Account id of current active user, used during token request.
-  std::string account_id_;
-
-  // Current retry count due to request cancellation.
-  int retry_times_;
-
-  DISALLOW_COPY_AND_ASSIGN(IdentitySource);
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_CORE_SESSION_IDENTITY_SOURCE_H_