Do not clear tokens from db when the user enters new credentials.

chrome/browser/sync/signin_manager.h

Index: chrome/browser/sync/signin_manager.h
diff --git a/chrome/browser/sync/signin_manager.h b/chrome/browser/sync/signin_manager.h
index 3a34f454ce998707a02af8a2337cce98670acf5a..5b3a722c78e4f40ba02d2a2236ed9f3f0a6a51c5 100644
--- a/chrome/browser/sync/signin_manager.h
+++ b/chrome/browser/sync/signin_manager.h
@@ -81,6 +81,11 @@ class SigninManager : public GaiaAuthConsumer,
   // associated with the user, and canceling all auth in progress.
   void SignOut();
 
+  // Called when a new request to re-authenticate a user is in progress.
+  // Will clear in memory data but leaves the db as such so when the browser
+  // restarts we can use the old token(which might throw a password error).
+  void ClearInMemoryData();
+
   // GaiaAuthConsumer
   virtual void OnClientLoginSuccess(const ClientLoginResult& result) OVERRIDE;
   virtual void OnClientLoginFailure(const GoogleServiceAuthError& error)