text input focus: Supports Window::GetFocusedTextInputClient.

ui/views/widget/native_widget_aura.cc

Index: ui/views/widget/native_widget_aura.cc
diff --git a/ui/views/widget/native_widget_aura.cc b/ui/views/widget/native_widget_aura.cc
index 55d67061f8d1680a882e45e50bb81e7104114817..532750d93b5b3a0d1fa7b90689b67e06b8feeeb3 100644
--- a/ui/views/widget/native_widget_aura.cc
+++ b/ui/views/widget/native_widget_aura.cc
@@ -771,6 +771,10 @@ void NativeWidgetAura::OnBoundsChanged(const gfx::Rect& old_bounds,
     delegate_->OnNativeWidgetSizeChanged(new_bounds.size());
 }
 
+ui::TextInputClient* NativeWidgetAura::GetFocusedTextInputClient() {
+  return GetWidget()->GetFocusedTextInputClient();
+}
+
 gfx::NativeCursor NativeWidgetAura::GetCursor(const gfx::Point& point) {
   return cursor_;
 }