Convert the overlay scrollbar flag to use FeatureList

chrome/renderer/autofill/form_classifier_browsertest.cc

 // Copyright 2016 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/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/test/base/chrome_render_view_test.h"
 #include "components/autofill/content/renderer/form_classifier.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFormElement.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
-#include "ui/native_theme/native_theme_switches.h"
+#include "ui/native_theme/native_theme_features.h"
 
 namespace autofill {
 
 class FormClassifierTest : public ChromeRenderViewTest {
  public:
   FormClassifierTest() {}
 
   void SetUp() override {
     blink::WebRuntimeFeatures::EnableOverlayScrollbars(
         ui::IsOverlayScrollbarEnabled());
@@ skipping 210 matching lines @@
 }
 
 TEST_F(FormClassifierTest, kChangeFormWithTreePasswordFieldsHTML) {
   LoadHTML(kChangeFormWithTreePasswordFieldsHTML);
   std::string generation_field;
   EXPECT_TRUE(GetGenerationField(&generation_field));
   EXPECT_EQ("password", generation_field);
 }
 
 }  // namespace autofill