Revert of Disable ExternalPopupMenuRemoveTest.RemoveOnChange.

content/renderer/external_popup_menu_browsertest.cc

 // Copyright (c) 2011 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 "base/strings/utf_string_conversions.h"
 #include "content/common/frame_messages.h"
 #include "content/public/test/render_view_test.h"
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 120 matching lines @@
 class ExternalPopupMenuRemoveTest : public ExternalPopupMenuTest {
  public:
   ExternalPopupMenuRemoveTest() {}
 
  protected:
   bool ShouldRemoveSelectOnChange() const override { return true; }
 };
 
 // Tests that nothing bad happen when the page removes the select when it
 // changes. (http://crbug.com/61997)
-// TODO(tkent): Change event becomes asynchronous.  crbug.com/516945
-TEST_F(ExternalPopupMenuRemoveTest, DISABLED_RemoveOnChange) {
+TEST_F(ExternalPopupMenuRemoveTest, RemoveOnChange) {
   // Click the text field once to show the popup.
   EXPECT_TRUE(SimulateElementClick(kSelectID));
 
   // Select something, it causes the select to be removed from the page.
   frame()->OnSelectPopupMenuItem(0);
 
   // Just to check the soundness of the test, call SimulateElementClick again.
   // It should return false as the select has been removed.
   EXPECT_FALSE(SimulateElementClick(kSelectID));
 }
@@ skipping 44 matching lines @@
   ASSERT_EQ(5U, base::get<0>(param).popup_items.size());
 
   // Select index 1 item. This should select item with index 2,
   // skipping the item with 'display: none'
   frame()->OnSelectPopupMenuItem(1);
 
   EXPECT_EQ(2, GetSelectedIndex());
 }
 
 }  // namespace content