[Signin Error Dialog] (3/3) Added the triggering code

chrome/browser/ui/webui/signin/inline_login_handler_impl.cc

Index: chrome/browser/ui/webui/signin/inline_login_handler_impl.cc
diff --git a/chrome/browser/ui/webui/signin/inline_login_handler_impl.cc b/chrome/browser/ui/webui/signin/inline_login_handler_impl.cc
index b166898dd31cfd8164cb3e87515ac9806bd72958..ce93982584f49d029e1bc941a0aee75c56801127 100644
--- a/chrome/browser/ui/webui/signin/inline_login_handler_impl.cc
+++ b/chrome/browser/ui/webui/signin/inline_login_handler_impl.cc
@@ -454,6 +454,8 @@ void InlineSigninHelper::ConfirmEmailAction(
 
 void InlineSigninHelper::OnClientOAuthFailure(
   const GoogleServiceAuthError& error) {
+  LoginUIServiceFactory::GetForProfile(profile_)->SetLastLoginErrorEmail(
+      base::string16());
   if (handler_)
     handler_->HandleLoginError(error.ToString());
 
@@ -780,6 +782,8 @@ void InlineLoginHandlerImpl::FinishCompleteLogin(
       validate_email == "1") {
     if (!gaia::AreEmailsSame(params.email, default_email)) {
       if (params.handler) {
+        LoginUIServiceFactory::GetForProfile(profile)->SetLastLoginErrorEmail(
+            base::UTF8ToUTF16(params.email));
         params.handler->HandleLoginError(
             l10n_util::GetStringFUTF8(IDS_SYNC_WRONG_EMAIL,
                                       base::UTF8ToUTF16(default_email)));
@@ -824,8 +828,11 @@ void InlineLoginHandlerImpl::FinishCompleteLogin(
   bool can_offer = CanOffer(profile, can_offer_for, params.gaia_id,
                             params.email, &error_msg);
   if (!can_offer) {
-    if (params.handler)
+    if (params.handler) {
+      LoginUIServiceFactory::GetForProfile(profile)->SetLastLoginErrorEmail(
+          base::UTF8ToUTF16(params.email));
       params.handler->HandleLoginError(error_msg);

[tommycli, 2016/08/23 19:15:39]

Instead of setting a global SetLastLoginErrorEmail, we should pass it along the
same lines as error_msg.

[Jane, 2016/08/24 13:40:31]

Done.

+    }
     return;
   }