[Autofill] Handle the Tab Key in the new UI

chrome/browser/autofill/autofill_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 <string>
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 569 matching lines @@
   // form.
   SendKeyToPopupAndWait(ui::VKEY_DOWN);
 
   // Press Enter to accept the autofill suggestions.
   SendKeyToPopupAndWait(ui::VKEY_RETURN);
 
   // The form should be filled.
   ExpectFilledTestForm();
 }
 
+IN_PROC_BROWSER_TEST_F(AutofillTest, AutofillSelectViaTab) {
+  CreateTestProfile();
+
+  // Load the test page.
+  ASSERT_NO_FATAL_FAILURE(ui_test_utils::NavigateToURL(browser(),
+      GURL(std::string(kDataURIPrefix) + kTestFormString)));
+
+  // Focus a fillable field.
+  FocusFirstNameField();
+
+  // Press the down arrow to initiate Autofill and wait for the popup to be
+  // shown.
+  SendKeyToPageAndWait(ui::VKEY_DOWN);
+
+  // Press the down arrow to select the suggestion and preview the autofilled
+  // form.
+  SendKeyToPopupAndWait(ui::VKEY_DOWN);
+
+  // Press tab to accept the autofill suggestions.
+  SendKeyToPopupAndWait(ui::VKEY_TAB);
+
+  // The form should be filled.
+  ExpectFilledTestForm();
+}
+
 // http://crbug.com/150084
 #if defined(OS_MACOSX)
 #define MAYBE_OnChangeAfterAutofill OnChangeAfterAutofill
 #else
 #define MAYBE_OnChangeAfterAutofill FLAKY_OnChangeAfterAutofill
 #endif
 // Test that a JavaScript onchange event is fired after auto-filling a form.
 IN_PROC_BROWSER_TEST_F(AutofillTest, MAYBE_OnChangeAfterAutofill) {
   CreateTestProfile();
 
@@ skipping 1116 matching lines @@
 IN_PROC_BROWSER_TEST_F(AutofillTest,
                        DISABLED_MergeAggregatedDuplicatedProfiles) {
   int num_of_profiles =
       AggregateProfilesIntoAutofillPrefs("dataset_no_address.txt");
 
   ASSERT_GT(num_of_profiles,
             static_cast<int>(personal_data_manager()->GetProfiles().size()));
 }
 
 }  // namespace autofill