[ABANDONED] Simplify ash shelf dimmer.

ui/views/widget/widget.cc

 // Copyright (c) 2012 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/widget.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 776 matching lines @@
 
   // If the view is removed during the drag operation, dragged_view_ is set to
   // NULL.
   if (view && dragged_view_ == view) {
     dragged_view_ = NULL;
     view->OnDragDone();
   }
   OnDragComplete();
 }
 
+void Widget::OnDragEnter() {}
+
+void Widget::OnDragExit() {}
+
 void Widget::SchedulePaintInRect(const gfx::Rect& rect) {
   native_widget_->SchedulePaintInRect(rect);
 }
 
 void Widget::SetCursor(gfx::NativeCursor cursor) {
   native_widget_->SetCursor(cursor);
 }
 
 bool Widget::IsMouseEventsEnabled() const {
   return native_widget_->IsMouseEventsEnabled();
@@ skipping 684 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views