Don't show "Save password" prompt for a failed login

components/autofill/content/renderer/password_autofill_agent.cc

Index: components/autofill/content/renderer/password_autofill_agent.cc
diff --git a/components/autofill/content/renderer/password_autofill_agent.cc b/components/autofill/content/renderer/password_autofill_agent.cc
index f9a0b25a8aec430e14cd9a335db6c59a6a95f953..04fdab0c7b57969b92aeb02d55c404f9026c5f9c 100644
--- a/components/autofill/content/renderer/password_autofill_agent.cc
+++ b/components/autofill/content/renderer/password_autofill_agent.cc
@@ -232,6 +232,7 @@ PasswordAutofillAgent::PasswordAutofillAgent(content::RenderView* render_view)
       was_username_autofilled_(false),
       was_password_autofilled_(false),
       username_selection_start_(0),
+      did_stop_loading_(false),
       weak_ptr_factory_(this) {
 }
 
@@ -538,7 +539,8 @@ void PasswordAutofillAgent::SendPasswordForms(blink::WebFrame* frame,
 
   if (only_visible) {
     Send(new AutofillHostMsg_PasswordFormsRendered(routing_id(),
-                                                   password_forms));
+                                                   password_forms,
+                                                   did_stop_loading_));
   } else {
     Send(new AutofillHostMsg_PasswordFormsParsed(routing_id(), password_forms));
   }
@@ -555,6 +557,7 @@ bool PasswordAutofillAgent::OnMessageReceived(const IPC::Message& message) {
 }
 
 void PasswordAutofillAgent::DidStartLoading() {
+  did_stop_loading_ = false;
   if (usernames_usage_ != NOTHING_TO_AUTOFILL) {
     UMA_HISTOGRAM_ENUMERATION("PasswordManager.OtherPossibleUsernamesUsage",
                               usernames_usage_,
@@ -578,6 +581,10 @@ void PasswordAutofillAgent::DidFinishLoad(blink::WebLocalFrame* frame) {
   SendPasswordForms(frame, true);
 }
 
+void PasswordAutofillAgent::DidStopLoading() {
+  did_stop_loading_ = true;
+}
+
 void PasswordAutofillAgent::FrameDetached(blink::WebFrame* frame) {
   FrameClosing(frame);
 }