Added multi-login support to one-click signin.

chrome/browser/ui/sync/one_click_signin_sync_starter.cc

Index: chrome/browser/ui/sync/one_click_signin_sync_starter.cc
diff --git a/chrome/browser/ui/sync/one_click_signin_sync_starter.cc b/chrome/browser/ui/sync/one_click_signin_sync_starter.cc
index ffa55174ad8f222f2669bc59ad84743a68b1b4aa..a5db0f70a36298960862cf42bfded17496c24a72 100644
--- a/chrome/browser/ui/sync/one_click_signin_sync_starter.cc
+++ b/chrome/browser/ui/sync/one_click_signin_sync_starter.cc
@@ -13,6 +13,7 @@
 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 
 OneClickSigninSyncStarter::OneClickSigninSyncStarter(
+    const std::string& session_index,
     const std::string& email,
     const std::string& password,
     Profile* profile,
@@ -23,7 +24,7 @@ OneClickSigninSyncStarter::OneClickSigninSyncStarter(
   DCHECK(profile_);
 
   SigninManager* manager = SigninManagerFactory::GetForProfile(profile_);
-  manager->StartSignInWithCredentials(email, password);
+  manager->StartSignInWithCredentials(session_index, email, password);
 }
 
 OneClickSigninSyncStarter::~OneClickSigninSyncStarter() {