Views: Add new SetFocusBehavior method.

ui/views/examples/tree_view_example.cc

Index: ui/views/examples/tree_view_example.cc
diff --git a/ui/views/examples/tree_view_example.cc b/ui/views/examples/tree_view_example.cc
index 5da97f755bb70c048db88b025587d7aa710103bc..ddf69aef6c35849b13d429326daf7a6bf23a6f3f 100644
--- a/ui/views/examples/tree_view_example.cc
+++ b/ui/views/examples/tree_view_example.cc
@@ -47,11 +47,11 @@ void TreeViewExample::CreateExampleView(View* container) {
   tree_view_->SetModel(&model_);
   tree_view_->SetController(this);
   add_ = new LabelButton(this, ASCIIToUTF16("Add"));
-  add_->SetFocusable(true);
+  add_->SetFocusBehavior(View::FocusBehavior::ALWAYS);
   remove_ = new LabelButton(this, ASCIIToUTF16("Remove"));
-  remove_->SetFocusable(true);
+  remove_->SetFocusBehavior(View::FocusBehavior::ALWAYS);
   change_title_ = new LabelButton(this, ASCIIToUTF16("Change Title"));
-  change_title_->SetFocusable(true);
+  change_title_->SetFocusBehavior(View::FocusBehavior::ALWAYS);
 
   GridLayout* layout = new GridLayout(container);
   container->SetLayoutManager(layout);