autofill - Keep showing form preview while card unmasking prompt is up.

components/autofill/content/renderer/autofill_agent.cc

Index: components/autofill/content/renderer/autofill_agent.cc
diff --git a/components/autofill/content/renderer/autofill_agent.cc b/components/autofill/content/renderer/autofill_agent.cc
index b0ff55a96ccd758599a314223dee9a1f1c041d61..579433479322088ba71410a13d2d0ec589c8ecbb 100644
--- a/components/autofill/content/renderer/autofill_agent.cc
+++ b/components/autofill/content/renderer/autofill_agent.cc
@@ -173,7 +173,6 @@ bool AutofillAgent::OnMessageReceived(const IPC::Message& message) {
                         OnFillPasswordSuggestion)
     IPC_MESSAGE_HANDLER(AutofillMsg_PreviewPasswordSuggestion,
                         OnPreviewPasswordSuggestion)
-    IPC_MESSAGE_HANDLER(AutofillMsg_PopupHidden, OnPopupHidden)
     IPC_MESSAGE_HANDLER(AutofillMsg_RequestAutocompleteResult,
                         OnRequestAutocompleteResult)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -559,11 +558,6 @@ void AutofillAgent::OnPreviewPasswordSuggestion(
   DCHECK(handled);
 }
 
-void AutofillAgent::OnPopupHidden() {
-  if (!element_.isNull())
-    OnClearPreviewedForm();
-}
-
 void AutofillAgent::OnRequestAutocompleteResult(
     WebFormElement::AutocompleteResult result,
     const base::string16& message,