Improves focus/activation for aura-mus and DesktopNativeWidgetAura

ui/aura/test/aura_test_base.cc

Index: ui/aura/test/aura_test_base.cc
diff --git a/ui/aura/test/aura_test_base.cc b/ui/aura/test/aura_test_base.cc
index 2af73e871456e967df37a9f496f1d7b52a32feb8..9588711707f68f6405467cd1ba7fdc5cb72744f5 100644
--- a/ui/aura/test/aura_test_base.cc
+++ b/ui/aura/test/aura_test_base.cc
@@ -232,10 +232,6 @@ void AuraTestBase::OnWmPerformMoveLoop(
 
 void AuraTestBase::OnWmCancelMoveLoop(Window* window) {}
 
-client::FocusClient* AuraTestBase::GetFocusClient() {
-  return helper_->focus_client();
-}
-
 client::CaptureClient* AuraTestBase::GetCaptureClient() {
   return helper_->capture_client();
 }