Get rid of Widget::ConvertPointFromAncestor.

ui/views/widget/native_widget_aura.cc

 // 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.
 
 #include "ui/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/string_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/drag_drop_client.h"
@@ skipping 496 matching lines @@
 void NativeWidgetAura::ClearNativeFocus() {
   if (window_ && window_->GetFocusManager())
     window_->GetFocusManager()->SetFocusedWindow(window_);
 }
 
 void NativeWidgetAura::FocusNativeView(gfx::NativeView native_view) {
   // http://crbug.com/102572
   NOTIMPLEMENTED();
 }
 
-bool NativeWidgetAura::ConvertPointFromAncestor(const Widget* ancestor,
-                                                gfx::Point* point) const {
-  // http://crbug.com/102573
-  NOTIMPLEMENTED();
-  return false;
-}
-
 gfx::Rect NativeWidgetAura::GetWorkAreaBoundsInScreen() const {
   return gfx::Screen::GetMonitorWorkAreaNearestWindow(GetNativeView());
 }
 
 void NativeWidgetAura::SetInactiveRenderingDisabled(bool value) {
   if (!value)
     desktop_observer_.reset();
   else
     desktop_observer_.reset(new DesktopObserverImpl(this));
 }
@@ skipping 252 matching lines @@
   NOTIMPLEMENTED();
 }
 
 // static
 bool NativeWidgetPrivate::IsMouseButtonDown() {
   return aura::Desktop::GetInstance()->IsMouseButtonDown();
 }
 
 }  // namespace internal
 }  // namespace views