When comparing emails in the one click signin helper, use the existing utility

function to compare emails instead of doing a string compare.

BUG=244408

Review URL: https://chromiumcodereview.appspot.com/15896026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@204023 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/sync/one_click_signin_helper.cc

@@ -1184,7 +1184,7 @@ void OneClickSigninHelper::DidStopLoading(
       std::string last_email =
           profile->GetPrefs()->GetString(prefs::kGoogleServicesLastUsername);
 
-      if (!last_email.empty() && last_email != email_) {
+      if (!last_email.empty() && !gaia::AreEmailsSame(last_email, email_)) {
         // If the new email address is different from the email address that
         // just signed in, show a confirmation dialog.