[Password Manager] Use XHR completion as a possible signal for form submission

components/autofill/content/renderer/autofill_agent.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/content/renderer/autofill_agent.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_split.h"
@@ skipping 750 matching lines @@
     if (frame && !frame->isLoading()) {
       ProcessForms();
       password_autofill_agent_->OnDynamicFormsSeen();
       if (password_generation_agent_)
         password_generation_agent_->OnDynamicFormsSeen();
       return;
     }
   }
 }
 
+void AutofillAgent::didRemoveFormControls(const WebVector<WebNode>& nodes) {
+  password_autofill_agent_->OnFormElementsRemoved(nodes);
+}
+
+void AutofillAgent::XHRSucceeded() {
+  password_autofill_agent_->XHRSucceeded();
+}
+
 // LegacyAutofillAgent ---------------------------------------------------------
 
 AutofillAgent::LegacyAutofillAgent::LegacyAutofillAgent(
     content::RenderView* render_view,
     AutofillAgent* agent)
     : content::RenderViewObserver(render_view), agent_(agent) {
 }
 
 AutofillAgent::LegacyAutofillAgent::~LegacyAutofillAgent() {
 }
 
 void AutofillAgent::LegacyAutofillAgent::OnDestruct() {
   // No-op. Don't delete |this|.
 }
 
 void AutofillAgent::LegacyAutofillAgent::FocusChangeComplete() {
   agent_->FocusChangeComplete();
 }
 
 }  // namespace autofill