(Mac)Views: Widgets focus first View in traversal order if initial focus fails.

ui/views/test/views_test_helper_mac.mm

Index: ui/views/test/views_test_helper_mac.mm
diff --git a/ui/views/test/views_test_helper_mac.mm b/ui/views/test/views_test_helper_mac.mm
index b35280c0d8b5d5e58cf91c9961d4d4aff9e7f5b1..40427ad81eacf142bceb60139541162d7484a3f8 100644
--- a/ui/views/test/views_test_helper_mac.mm
+++ b/ui/views/test/views_test_helper_mac.mm
@@ -12,7 +12,10 @@
 #include "ui/base/test/scoped_fake_nswindow_fullscreen.h"
 #include "ui/base/test/ui_controls.h"
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
+#include "ui/views/cocoa/bridged_content_view.h"
+#include "ui/views/cocoa/bridged_native_widget.h"
 #include "ui/views/test/event_generator_delegate_mac.h"
+#include "ui/views/widget/native_widget_mac.h"
 #include "ui/views/widget/widget.h"
 
 namespace views {
@@ -65,4 +68,11 @@ void ViewsTestHelperMac::TearDown() {
     DCHECK(!Widget::GetWidgetForNativeWindow(window)) << "Widget not closed.";
 }
 
+void ViewsTestHelperMac::SetFullKeyboardAccessState(Widget* widget,
+                                                    bool new_state) {
+  faked_full_keyboard_access_->set_full_keyboard_access_state(new_state);
+  [NativeWidgetMac::GetBridgeForNativeWindow(widget->GetNativeWindow())
+          ->ns_view() updateFullKeyboardAccess];
+}
+
 }  // namespace views