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

ui/views/widget/widget.cc

Index: ui/views/widget/widget.cc
diff --git a/ui/views/widget/widget.cc b/ui/views/widget/widget.cc
index 08578add8f534fe637481183fd005dbc34a58a1c..8b062753e23765729eb07cb7ac267a9ff10fe818 100644
--- a/ui/views/widget/widget.cc
+++ b/ui/views/widget/widget.cc
@@ -1303,18 +1303,24 @@ const Widget* Widget::AsWidget() const {
 }
 
 bool Widget::SetInitialFocus(ui::WindowShowState show_state) {
+  FocusManager* focus_manager = GetFocusManager();
   View* v = widget_delegate_->GetInitiallyFocusedView();
   if (!focus_on_creation_ || show_state == ui::SHOW_STATE_INACTIVE ||
       show_state == ui::SHOW_STATE_MINIMIZED) {
     // If not focusing the window now, tell the focus manager which view to
     // focus when the window is restored.
-    if (v && focus_manager_.get())
-      focus_manager_->SetStoredFocusView(v);
+    if (v && focus_manager)
+      focus_manager->SetStoredFocusView(v);
     return true;
   }
-  if (v)
+  if (v) {
     v->RequestFocus();
-  return !!v;
+    // If the request for focus was unsuccessful, fall back to using the first
+    // focusable View instead.
+    if (focus_manager && focus_manager->GetFocusedView() == nullptr)
+      focus_manager->AdvanceFocus(false);
+  }
+  return !!focus_manager->GetFocusedView();
 }
 
 ////////////////////////////////////////////////////////////////////////////////