Enable accessibility testing for the bookmark browser test.

chrome/browser/ui/webui/bookmarks_ui_browsertest.cc

Index: chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc b/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
index c5160339ed15fd87d17cbc8fb36c2842ebd3f255..eb99a718b55b43727d7e63640178abc8ee8b711d 100644
--- a/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/bookmarks_ui_browsertest.cc
@@ -18,6 +18,11 @@ class BookmarksTest : public InProcessBrowserTest {
  public:
   BookmarksTest() {}
 
+  void SetUpOnMainThread() override {
+    InProcessBrowserTest::SetUpOnMainThread();
+    EnableAccessibilityChecksForTestCase(true);
+  }
+
   void OpenBookmarksManager() {
     content::TestNavigationObserver navigation_observer(
         browser()->tab_strip_model()->GetActiveWebContents(), 2);