Added multi-login support to one-click signin.

chrome/browser/ui/sync/one_click_signin_helper.h

 // Copyright (c) 2012 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_SYNC_ONE_CLICK_SIGNIN_HELPER_H_
 #define CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_HELPER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 23 matching lines @@
   // child/route id.
   static void ShowInfoBarIfPossible(net::URLRequest* request,
                                     int child_id,
                                     int route_id);
 
   explicit OneClickSigninHelper(content::WebContents* web_contents);
   virtual ~OneClickSigninHelper();
 
  private:
   // The portion of ShowInfoBarIfPossible() that needs to run on the UI thread.
-  static void ShowInfoBarUIThread(const std::string& account,
+  static void ShowInfoBarUIThread(const std::string& session_index,
+                                  const std::string& email,
                                   int child_id,
                                   int route_id);
 
   // content::WebContentsObserver overrides.
   virtual void DidNavigateAnyFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE;
   virtual void DidStopLoading() OVERRIDE;
 
   // Save the email address that we can display the info bar correctly.
-  void SaveEmail(const std::string& email);
+  void SaveSessionIndexAndEmail(const std::string& session_index,
+                                const std::string& email);
 
   // Remember the user's password for later use.
   void SavePassword(const std::string& password);
 
-  // Email address and password of the account that has just logged in.
+  // Information about the account that has just logged in.
+  std::string session_index_;
   std::string email_;
   std::string password_;
 
   DISALLOW_COPY_AND_ASSIGN(OneClickSigninHelper);
 };
 
 #endif  // CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_HELPER_H_