Makes View::focusable() return last value supplied to SetFocusable()

ui/views/controls/textfield/native_textfield_views_unittest.cc

Index: ui/views/controls/textfield/native_textfield_views_unittest.cc
diff --git a/ui/views/controls/textfield/native_textfield_views_unittest.cc b/ui/views/controls/textfield/native_textfield_views_unittest.cc
index 202d1033ea7f99fdc73e4c25c5f940d0a775019d..eb5b09d83fd7057d255506fc1747e1d52bd4d0af 100644
--- a/ui/views/controls/textfield/native_textfield_views_unittest.cc
+++ b/ui/views/controls/textfield/native_textfield_views_unittest.cc
@@ -79,6 +79,8 @@ class TestTextfield : public views::Textfield {
 
   void clear() { key_received_ = key_handled_ = false; }
 
+  bool focusable() const { return View::focusable(); }
+
  private:
   bool key_handled_;
   bool key_received_;