text input focus: Supports Window::GetFocusedTextInputClient.

ui/aura/test/test_window_delegate.cc

Index: ui/aura/test/test_window_delegate.cc
diff --git a/ui/aura/test/test_window_delegate.cc b/ui/aura/test/test_window_delegate.cc
index 7f0ca1b7a149a7fed6da54722b28b40363144ed2..3c6a308174f0d2011d5b7497cabba949284727f8 100644
--- a/ui/aura/test/test_window_delegate.cc
+++ b/ui/aura/test/test_window_delegate.cc
@@ -50,6 +50,10 @@ void TestWindowDelegate::OnBoundsChanged(const gfx::Rect& old_bounds,
                                          const gfx::Rect& new_bounds) {
 }
 
+ui::TextInputClient* TestWindowDelegate::GetFocusedTextInputClient() {
+  return &text_input_client_;
+}
+
 gfx::NativeCursor TestWindowDelegate::GetCursor(const gfx::Point& point) {
   return gfx::kNullCursor;
 }