More robust fill password fields on click.

chrome/renderer/autofill/password_autofill_agent_browsertest.cc

 // Copyright (c) 2012 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/password_autofill_agent.h"
 
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 2498 matching lines @@
                 expect_signature_for_field);
       if (expect_signature_for_field) {
         EXPECT_EQ(field_element.getAttribute(field_signature_attribute),
                   blink::WebString::fromUTF8(base::Uint64ToString(
                       CalculateFieldSignatureForField(form_data.fields[i]))));
       }
     }
   }
 }
 
+// Tests that a suggestion dropdown is shown even if JavaScripts updated field
+// names.
+TEST_F(PasswordAutofillAgentTest, SuggestWhenJavaScriptUpdatesFieldNames) {
+  // Simulate that JavaScript updated field names.
+  auto fill_data = fill_data_;
+  fill_data.username_field.name += ASCIIToUTF16("1");
+  fill_data.password_field.name += ASCIIToUTF16("1");
+  // Simulate the browser sending back the login info.
+  SimulateOnFillPasswordForm(fill_data);
+
+  // Call SimulateElementClick() to produce a user gesture on the page so
+  // autofill will actually fill.
+  SimulateElementClick(kUsernameName);
+
+  // Simulate a user clicking on the password element. This should produce a
+  // dropdown with suggestion of all available usernames.
+  static_cast<PageClickListener*>(autofill_agent_)
+      ->FormControlElementClicked(password_element_, false);
+  CheckSuggestions("", false);
+}
+
 }  // namespace autofill