text input focus: Supports Window::GetFocusedTextInputClient.

ui/views/widget/desktop_aura/desktop_native_widget_aura.cc

Index: ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
diff --git a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
index 88c60906b7268d02bffd85fdb683ef05c9bca77a..a2e05cd1893756b1d2fc1c07fbefae8e7f333edf 100644
--- a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
+++ b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
@@ -976,6 +976,10 @@ gfx::Size DesktopNativeWidgetAura::GetMaximumSize() const {
   return native_widget_delegate_->GetMaximumSize();
 }
 
+ui::TextInputClient* DesktopNativeWidgetAura::GetFocusedTextInputClient() {
+  return GetWidget()->GetFocusedTextInputClient();
+}
+
 gfx::NativeCursor DesktopNativeWidgetAura::GetCursor(const gfx::Point& point) {
   return cursor_;
 }