Allow sync with 2-factor StrongAuth accounts in ChromeOS.

chrome/browser/chromeos/login/screen_locker.cc

Index: chrome/browser/chromeos/login/screen_locker.cc
diff --git a/chrome/browser/chromeos/login/screen_locker.cc b/chrome/browser/chromeos/login/screen_locker.cc
index 2d8ccd08ea5d0ed9f4e6899a2e923814298f6266..6b81138209bbc6cb8f0a0bac3b2a5bd441211435 100644
--- a/chrome/browser/chromeos/login/screen_locker.cc
+++ b/chrome/browser/chromeos/login/screen_locker.cc
@@ -33,6 +33,8 @@
 #include "chrome/browser/chromeos/system_key_event_listener.h"
 #include "chrome/browser/chromeos/wm_ipc.h"
 #include "chrome/browser/metrics/user_metrics.h"
+#include "chrome/browser/profile_manager.h"
+#include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/notification_service.h"
@@ -700,6 +702,15 @@ void ScreenLocker::OnLoginSuccess(
     UMA_HISTOGRAM_TIMES("ScreenLocker.AuthenticationSuccessTime", delta);
   }
 
+  Profile* profile = ProfileManager::GetDefaultProfile();
+  if (profile) {
+    ProfileSyncService* service = profile->GetProfileSyncService(username);
+    if (service && !service->HasSyncSetupCompleted()) {
+      // If sync has failed somehow, try setting the sync passphrase here.
+      service->SetPassphrase(password, false);
+    }
+  }
+
   if (CrosLibrary::Get()->EnsureLoaded())
     CrosLibrary::Get()->GetScreenLockLibrary()->NotifyScreenUnlockRequested();
 }