Override SigninManager::SignOut if force-signin is enabled.

chrome/browser/signin/chrome_signin_client.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_SIGNIN_CHROME_SIGNIN_CLIENT_H_
 #define CHROME_BROWSER_SIGNIN_CHROME_SIGNIN_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "build/build_config.h"
@@ skipping 59 matching lines @@
       const GURL& url,
       const std::string& name,
       const net::CookieStore::CookieChangedCallback& callback) override;
   void OnSignedIn(const std::string& account_id,
                   const std::string& gaia_id,
                   const std::string& username,
                   const std::string& password) override;
   void PostSignedIn(const std::string& account_id,
                     const std::string& username,
                     const std::string& password) override;
+  void PreSignOut(const base::Callback<void()>& sign_out) override;
 
   // SigninErrorController::Observer implementation.
   void OnErrorChanged() override;
 
   // gaia::GaiaOAuthClient::Delegate implementation.
   void OnGetTokenInfoResponse(
       std::unique_ptr<base::DictionaryValue> token_info) override;
   void OnOAuthError() override;
   void OnNetworkError(int response_code) 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;
 
 #if !defined(OS_CHROMEOS)
   // net::NetworkChangeController::NetworkChangeObserver implementation.
   void OnNetworkChanged(net::NetworkChangeNotifier::ConnectionType type)
       override;
 #endif
 
+  void AfterCredentialsCopied() override;
+
+ protected:
+  virtual void ShowUserManager(const base::FilePath& profile_path);
+  virtual void LockProfile(const base::FilePath& profile_path);
+
  private:
   void MaybeFetchSigninTokenHandle();
-
+  void OnCloseBrowsersSuccess(const base::Callback<void()>& sign_out,
+                              const base::FilePath& profile_path);
+  void OnCloseBrowsersAborted(const base::FilePath& profile_path);
   Profile* profile_;
 
   SigninErrorController* signin_error_controller_;
 #if !defined(OS_CHROMEOS)
   std::list<base::Closure> delayed_callbacks_;
 #endif
 
+  bool is_force_signin_enabled_;
+  bool should_display_user_manager_ = true;
+
   std::unique_ptr<gaia::GaiaOAuthClient> oauth_client_;
   std::unique_ptr<OAuth2TokenService::Request> oauth_request_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeSigninClient);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_CHROME_SIGNIN_CLIENT_H_