PasswordManager should trigger autofill for new forms + old PasswordFromManagers

chrome/browser/password_manager/password_manager_browsertest.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 <string>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/path_service.h"
@@ skipping 1297 matching lines @@
   NavigateToFile("/password/form_with_only_password_field.html");
 
   // Let the user interact with the page, so that DOM gets modification events,
   // needed for autofilling fields.
   content::SimulateMouseClickAt(
       WebContents(), 0, blink::WebMouseEvent::ButtonLeft, gfx::Point(1, 1));
 
   // Wait until that interaction causes the password value to be revealed.
   WaitForElementValue("password", "mypassword");
 }
+
+// Test that if a form gets autofilled, then it gets autofilled on re-creation
+// as well.
+IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTest, ReCreatedFormsGetFilled) {
+  NavigateToFile("/password/dynamic_password_form.html");
+
+  // Fill in the credentials, and make sure they are saved.
+  NavigationObserver form_submit_observer(WebContents());
+  scoped_ptr<PromptObserver> prompt_observer(
+      PromptObserver::Create(WebContents()));
+  std::string create_fill_and_submit =
+      "document.getElementById('create_form_button').click();"
+      "window.setTimeout(function() {"
+      "  var form = document.getElementById('dynamic_form_id');"
+      "  form.username.value = 'temp';"
+      "  form.password.value = 'random';"
+      "  form.submit();"
+      "}, 0)";
+  ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), create_fill_and_submit));
+  form_submit_observer.Wait();
+  EXPECT_TRUE(prompt_observer->IsShowingPrompt());
+  prompt_observer->Accept();
+
+  // Reload the original page to have the saved credentials autofilled.
+  NavigationObserver reload_observer(WebContents());
+  NavigateToFile("/password/dynamic_password_form.html");
+  reload_observer.Wait();
+  std::string create_form =
+      "document.getElementById('create_form_button').click();";
+  ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), create_form));
+  // Wait until the username is filled, to make sure autofill kicked in.
+  WaitForElementValue("username_id", "temp");
+
+  // Now the form gets deleted and created again. It should get autofilled
+  // again.
+  std::string delete_form =
+      "var form = document.getElementById('dynamic_form_id');"
+      "form.parentNode.removeChild(form);";
+  ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), delete_form));
+  ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), create_form));
+  WaitForElementValue("username_id", "temp");
+}