[MD History] Disable MD History for supervised users.

chrome/browser/browser_about_handler.cc

Index: chrome/browser/browser_about_handler.cc
diff --git a/chrome/browser/browser_about_handler.cc b/chrome/browser/browser_about_handler.cc
index 04274b19630444720285912579e02d40cfcc37a8..5126ea266f7a01b76481cab1fce1fcf3bd051075 100644
--- a/chrome/browser/browser_about_handler.cc
+++ b/chrome/browser/browser_about_handler.cc
@@ -14,7 +14,9 @@
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_dialogs.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"
@@ -75,7 +77,7 @@ bool WillHandleBrowserAboutURL(GURL* url,
   } else if (host == chrome::kChromeUIHistoryHost) {
     // Material design history is handled on the top-level chrome://history
     // host.
-    if (base::FeatureList::IsEnabled(features::kMaterialDesignHistoryFeature)) {
+    if (MdHistoryUI::IsEnabled(Profile::FromBrowserContext(browser_context))) {
       host = chrome::kChromeUIHistoryHost;
       path = url->path();
     } else {