Implement new password separated sign in flow for chrome desktop.

chrome/browser/ui/webui/signin/inline_login_handler_impl.h

 // Copyright 2013 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_UI_WEBUI_SIGNIN_INLINE_LOGIN_HANDLER_IMPL_H_
 #define CHROME_BROWSER_UI_WEBUI_SIGNIN_INLINE_LOGIN_HANDLER_IMPL_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 56 matching lines @@
    public:
     FinishCompleteLoginParams(InlineLoginHandlerImpl* handler,
                               content::StoragePartition* partition,
                               const GURL& url,
                               const base::FilePath& profile_path,
                               bool confirm_untrusted_signin,
                               const std::string& email,
                               const std::string& gaia_id,
                               const std::string& password,
                               const std::string& session_index,
+                              const std::string& auth_code,
                               bool choose_what_to_sync);
     ~FinishCompleteLoginParams();
 
     // Pointer to WebUI handler.  May be nullptr.
     InlineLoginHandlerImpl* handler;
     // The isolate storage partition containing sign in cookies.
     content::StoragePartition* partition;
     // URL of sign in containing parameters such as email, source, etc.
     GURL url;
     // Path to profile being signed in.  Non empty only when signing
     // in to the profile from the user manager.
     base::FilePath profile_path;
     // When true, an extra prompt will be shown to the user before sign in
     // completes.
     bool confirm_untrusted_signin;
     // Email address of the account used to sign in.
     std::string email;
     // Obfustcated gaia id of the account used to sign in.
     std::string gaia_id;
     // Password of the account used to sign in.
     std::string password;
-    // Index within gaia cookie of the account used to sign in.
+    // Index within gaia cookie of the account used to sign in.  Used only
+    // with old gaia flow.
     std::string session_index;
+    // Authentication code used to exchange for a login scoped refresh token
+    // for the account used to sign in.  Used only with new gaia flow.
+    std::string auth_code;
     // True if the user wants to configure sync before signing in.
     bool choose_what_to_sync;
   };
 
   static void FinishCompleteLogin(const FinishCompleteLoginParams& params,
                                   Profile* profile,
                                   Profile::CreateStatus status);
 
   // Overridden from content::WebContentsObserver overrides.
   void DidCommitProvisionalLoadForFrame(
       content::RenderFrameHost* render_frame_host,
       const GURL& url,
       ui::PageTransition transition_type) override;
 
   // True if the user has navigated to untrusted domains during the signin
   // process.
   bool confirm_untrusted_signin_;
 
   base::WeakPtrFactory<InlineLoginHandlerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InlineLoginHandlerImpl);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SIGNIN_INLINE_LOGIN_HANDLER_IMPL_H_