Reset gaia given name upon signout

chrome/browser/profiles/gaia_info_update_service.cc

Index: chrome/browser/profiles/gaia_info_update_service.cc
diff --git a/chrome/browser/profiles/gaia_info_update_service.cc b/chrome/browser/profiles/gaia_info_update_service.cc
index a68006b4fbe3e0be1538ec67c5390660eb060ad9..010756c210979193e649499150f01a71dd362fe8 100644
--- a/chrome/browser/profiles/gaia_info_update_service.cc
+++ b/chrome/browser/profiles/gaia_info_update_service.cc
@@ -159,6 +159,7 @@ void GAIAInfoUpdateService::OnUsernameChanged(const std::string& username) {
   if (username.empty()) {
     // Unset the old user's GAIA info.
     cache.SetGAIANameOfProfileAtIndex(profile_index, base::string16());
+    cache.SetGAIAGivenNameOfProfileAtIndex(profile_index, base::string16());
     // The profile index may have changed.
     profile_index = cache.GetIndexOfProfileWithPath(profile_->GetPath());
     if (profile_index == std::string::npos)