Migrate md history test code to ScopedFeatureList.

chrome/browser/ui/webui/uber/uber_ui_browsertest.cc

Index: chrome/browser/ui/webui/uber/uber_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/uber/uber_ui_browsertest.cc b/chrome/browser/ui/webui/uber/uber_ui_browsertest.cc
index 9c82457e1163d512689a23c65a3c1c55efbb2aa9..e8a5bdab88fee2f4352247260714b8a4622b3e12 100644
--- a/chrome/browser/ui/webui/uber/uber_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/uber/uber_ui_browsertest.cc
@@ -13,7 +13,6 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/browser/ui/webui/md_history_ui.h"
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
@@ -97,7 +96,8 @@ IN_PROC_BROWSER_TEST_F(UberUIBrowserTest, EnableMdExtensionsHidesExtensions) {
 }
 
 IN_PROC_BROWSER_TEST_F(UberUIBrowserTest, EnableMdHistoryHidesHistory) {
-  MdHistoryUI::SetEnabledForTesting(true);
+  base::test::ScopedFeatureList scoped_feature_list;
+  scoped_feature_list.InitAndEnableFeature(features::kMaterialDesignHistory);
 
   ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUIUberFrameURL));
   SelectTab();