text input focus: Supports Window::GetFocusedTextInputClient.

ui/aura/window.h

Index: ui/aura/window.h
diff --git a/ui/aura/window.h b/ui/aura/window.h
index dbd2d2b3e44cff9c65b6df37b33ae35ca015da24..d6d6f7a574a84c4d4be8c62f1174932091ae259b 100644
--- a/ui/aura/window.h
+++ b/ui/aura/window.h
@@ -38,6 +38,7 @@ class Vector2d;
 namespace ui {
 class EventHandler;
 class Layer;
+class TextInputClient;
 class Texture;
 }
 
@@ -218,6 +219,10 @@ class AURA_EXPORT Window : public ui::LayerDelegate,
                                   const Window* target,
                                   gfx::Rect* rect);
 
+  // Returns the focused text input client within this window.
+  // This function does not look at child windows.
+  ui::TextInputClient* GetFocusedTextInputClient();
+
   // Moves the cursor to the specified location relative to the window.
   void MoveCursorTo(const gfx::Point& point_in_window);