Avoid considering readonly password elements in password form

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 1171 matching lines @@
   // it's not coming from the user.
   NavigationObserver observer(WebContents());
   scoped_ptr<PromptObserver> prompt_observer(
       PromptObserver::Create(WebContents()));
   NavigateToFile("/password/done.html");
   observer.Wait();
   EXPECT_FALSE(prompt_observer->IsShowingPrompt());
 }
 
 IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTest,
+                       DontPromptForPasswordFormWithReadonlyPasswordField) {
+  NavigateToFile("/password/password_form_with_password_readonly.html");
+
+  // Fill a form and submit through a <input type="submit"> button. Nothing
+  // special.
+  NavigationObserver observer(WebContents());
+  scoped_ptr<PromptObserver> prompt_observer(
+      PromptObserver::Create(WebContents()));
+  std::string fill_and_submit =
+      "document.getElementById('username_field').value = 'temp';"
+      "document.getElementById('password_field').value = 'random';"
+      "document.getElementById('input_submit_button').click()";
+  ASSERT_TRUE(content::ExecuteScript(RenderViewHost(), fill_and_submit));
+  observer.Wait();
+  EXPECT_FALSE(prompt_observer->IsShowingPrompt());
+}
+
+IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTest,
                        PromptWhenEnableAutomaticPasswordSavingSwitchIsNotSet) {
   NavigateToFile("/password/password_form.html");
 
   // Fill a form and submit through a <input type="submit"> button.
   NavigationObserver observer(WebContents());
   scoped_ptr<PromptObserver> prompt_observer(
       PromptObserver::Create(WebContents()));
   std::string fill_and_submit =
       "document.getElementById('username_field').value = 'temp';"
       "document.getElementById('password_field').value = 'random';"
@@ skipping 677 matching lines @@
   NavigateToFile("/password/password_xhr_submit.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_field", "mypassword");
 }