[Password Manager] Use successful XHR submission as a signal for password saving

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 724 matching lines @@
   std::string fill_and_navigate =
       "document.getElementById('signup_username_field').value = 'temp';"
       "document.getElementById('signup_password_field').value = 'random';"
       "document.getElementById('confirmation_password_field').value = 'random';"
       "send_xhr()";
   ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), fill_and_navigate));
   observer.Wait();
   EXPECT_TRUE(prompt_observer->IsShowingPrompt());
 }
 
+IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTest,
+                       PromptForXHRSubmitWithoutNavigation) {
+  NavigateToFile("/password/password_xhr_submit.html");
+
+  // Need to pay attention for a message that XHR has finished since there
+  // is no navigation to wait for.
+  content::DOMMessageQueue message_queue;
+
+  // Verify that if XHR without navigation occurs and the form has been filled
+  // out we try and save the password. Note that in general the submission
+  // doesn't need to be via form.submit(), but for testing purposes it's
+  // necessary since we otherwise ignore changes made to the value of these
+  // fields by script.
+  scoped_ptr<PromptObserver> prompt_observer(
+      PromptObserver::Create(WebContents()));
+  std::string fill_and_submit =
+      "navigate = false;"
+      "document.getElementById('username_field').value = 'temp';"
+      "document.getElementById('password_field').value = 'random';"
+      "document.getElementById('submit_button').click();";
+  ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), fill_and_submit));
+  std::string message;
+  while (message_queue.WaitForMessage(&message)) {
+    if (message == "\"XHR_FINISHED\"")
+      break;
+  }
+
+  EXPECT_TRUE(prompt_observer->IsShowingPrompt());
+}
+
+IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTest,
+                       NoPromptForXHXSubmitWithoutNavigationWithUnfilledForm) {
+  NavigateToFile("/password/password_xhr_submit.html");
+
+  // Need to pay attention for a message that XHR has finished since there
+  // is no navigation to wait for.
+  content::DOMMessageQueue message_queue;
+
+  // Verify that if XHR without navigation occurs and the form has NOT been
+  // filled out we don't prompt.
+  scoped_ptr<PromptObserver> prompt_observer(
+      PromptObserver::Create(WebContents()));
+  std::string fill_and_submit =
+      "navigate = false;"
+      "document.getElementById('username_field').value = 'temp';"
+      "document.getElementById('submit_button').click();";
+  ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), fill_and_submit));
+  std::string message;
+  while (message_queue.WaitForMessage(&message)) {
+    if (message == "\"XHR_FINISHED\"")
+      break;
+  }
+
+  EXPECT_FALSE(prompt_observer->IsShowingPrompt());
+}
+
 IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTest, NoPromptIfLinkClicked) {
   NavigateToFile("/password/password_form.html");
 
   // Verify that if the user takes a direct action to leave the page, we don't
   // prompt to save the password even if the form is already filled out.
   NavigationObserver observer(WebContents());
   scoped_ptr<PromptObserver> prompt_observer(
       PromptObserver::Create(WebContents()));
   std::string fill_and_click_link =
       "document.getElementById('username_field').value = 'temp';"
@@ skipping 898 matching lines @@
       "document.getElementById('username_field').value = 'username';"
       "document.getElementById('password_field').value = 'mypass';"
       "document.getElementById('confirm_field').value = 'mypass';"
       "document.getElementById('security_answer').value = 'hometown';"
       "document.getElementById('SSN').value = '1234';"
       "document.getElementById('testform').submit();";
   ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), fill_and_submit));
   observer.Wait();
   EXPECT_TRUE(prompt_observer->IsShowingPrompt());
 }