Load Passwords and Autofill in the corresponding sub page.

chrome/test/data/webui/settings/settings_autofill_section_browsertest.js

Index: chrome/test/data/webui/settings/settings_autofill_section_browsertest.js
diff --git a/chrome/test/data/webui/settings/settings_autofill_section_browsertest.js b/chrome/test/data/webui/settings/settings_autofill_section_browsertest.js
index ce09a25f63ca945253929ec485518ce634ee36ad..c385373b9384bd87de508e167506166b913961ed 100644
--- a/chrome/test/data/webui/settings/settings_autofill_section_browsertest.js
+++ b/chrome/test/data/webui/settings/settings_autofill_section_browsertest.js
@@ -126,9 +126,13 @@ SettingsAutofillSectionBrowserTest.prototype = {
    * @private
    */
   createAutofillSection_: function(addresses, creditCards) {
+    // Override the AutofillManagerImpl for testing.
+    this.autofillManager = new TestAutofillManager();
+    this.autofillManager.data.addresses = addresses;
+    this.autofillManager.data.creditCards = creditCards;
+    AutofillManagerImpl.instance_ = this.autofillManager;
+
     var section = document.createElement('settings-autofill-section');
-    section.addresses = addresses;
-    section.creditCards = creditCards;
     document.body.appendChild(section);
     Polymer.dom.flush();
     return section;