Use an MutationObserver to check when a password form disappears after XHR

third_party/WebKit/Source/web/WebDocument.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 21 matching lines @@
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8ElementRegistrationOptions.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/dom/CSSSelectorWatch.h"
 #include "core/dom/Document.h"
 #include "core/dom/DocumentStatisticsCollector.h"
 #include "core/dom/DocumentType.h"
 #include "core/dom/Element.h"
+#include "core/dom/FormElementObserver.h"
 #include "core/dom/StyleEngine.h"
 #include "core/events/Event.h"
 #include "core/frame/WebLocalFrameBase.h"
 #include "core/html/HTMLAllCollection.h"
 #include "core/html/HTMLBodyElement.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLFormElement.h"
 #include "core/html/HTMLHeadElement.h"
+#include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/api/LayoutAPIShim.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/loader/DocumentLoader.h"
 #include "modules/accessibility/AXObject.h"
 #include "modules/accessibility/AXObjectCacheImpl.h"
 #include "platform/bindings/ScriptState.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "platform/wtf/PassRefPtr.h"
 #include "public/platform/WebDistillability.h"
 #include "public/platform/WebURL.h"
 #include "public/web/WebAXObject.h"
 #include "public/web/WebDOMEvent.h"
 #include "public/web/WebElement.h"
 #include "public/web/WebElementCollection.h"
 #include "public/web/WebFormElement.h"
+#include "public/web/WebFormElementObserverCallback.h"
+#include "public/web/WebInputElement.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
 WebURL WebDocument::Url() const {
   return ConstUnwrap<Document>()->Url();
 }
 
 WebSecurityOrigin WebDocument::GetSecurityOrigin() const {
   if (!ConstUnwrap<Document>())
@@ skipping 204 matching lines @@
     return false;
   return EqualIgnoringASCIICase(
       link_element->FastGetAttribute(HTMLNames::crossoriginAttr),
       "use-credentials");
 }
 
 WebDistillabilityFeatures WebDocument::DistillabilityFeatures() {
   return DocumentStatisticsCollector::CollectStatistics(*Unwrap<Document>());
 }
 
+void WebDocument::ObserveFormElement(
+    WebFormElement& element,
+    std::unique_ptr<WebFormElementObserverCallback> callback) {
+  Unwrap<Document>()->GetFormElementObserver()->Observe(
+      *element.Unwrap<HTMLFormElement>(), std::move(callback));
+}
+
+void WebDocument::ObserveFormElement(
+    WebInputElement& element,
+    std::unique_ptr<WebFormElementObserverCallback> callback) {
+  Unwrap<Document>()->GetFormElementObserver()->Observe(
+      *element.Unwrap<HTMLInputElement>(), std::move(callback));
+}
+
 WebDocument::WebDocument(Document* elem) : WebNode(elem) {}
 
 DEFINE_WEB_NODE_TYPE_CASTS(WebDocument, ConstUnwrap<Node>()->IsDocumentNode());
 
 WebDocument& WebDocument::operator=(Document* elem) {
   private_ = elem;
   return *this;
 }
 
 WebDocument::operator Document*() const {
   return ToDocument(private_.Get());
 }
 
 }  // namespace blink