Get rid of Widget::ConvertPointFromAncestor.

ui/views/widget/native_widget_gtk.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_WIDGET_NATIVE_WIDGET_GTK_H_
 #define UI_VIEWS_WIDGET_NATIVE_WIDGET_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 199 matching lines @@
   virtual void SetOpacity(unsigned char opacity) OVERRIDE;
   virtual void SetUseDragFrame(bool use_drag_frame) OVERRIDE;
   virtual bool IsAccessibleWidget() const OVERRIDE;
   virtual void RunShellDrag(View* view,
                             const ui::OSExchangeData& data,
                             int operation) OVERRIDE;
   virtual void SchedulePaintInRect(const gfx::Rect& rect) OVERRIDE;
   virtual void SetCursor(gfx::NativeCursor cursor) OVERRIDE;
   virtual void ClearNativeFocus() OVERRIDE;
   virtual void FocusNativeView(gfx::NativeView native_view) OVERRIDE;
-  virtual bool ConvertPointFromAncestor(
-      const Widget* ancestor, gfx::Point* point) const OVERRIDE;
   virtual gfx::Rect GetWorkAreaBoundsInScreen() const OVERRIDE;
   virtual void SetInactiveRenderingDisabled(bool value) OVERRIDE;
 
  protected:
   // Modifies event coordinates to the targeted widget contained by this widget.
   template<class Event> GdkEvent* TransformEvent(Event* event) {
     GdkWindow* dest = GTK_WIDGET(window_contents_)->window;
     if (event && event->window != dest) {
       gint dest_x, dest_y;
       gdk_window_get_root_origin(dest, &dest_x, &dest_y);
@@ skipping 233 matching lines @@
   bool is_menu_;
 
   scoped_ptr<ui::GtkSignalRegistrar> signal_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeWidgetGtk);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_NATIVE_WIDGET_GTK_H_