Aura/ash split: Don't use X11 window borders.

ui/views/widget/desktop_native_widget_helper_aura.h

 // 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.
 
 #ifndef UI_VIEWS_WIDGET_DESKTOP_NATIVE_WIDGET_HELPER_AURA_H_
 #define UI_VIEWS_WIDGET_DESKTOP_NATIVE_WIDGET_HELPER_AURA_H_
 #pragma once
 
 #include "ui/aura/root_window_observer.h"
 #include "ui/gfx/rect.h"
@@ skipping 11 matching lines @@
 
 namespace ui {
 #if defined(OS_WIN)
 class HWNDSubclass;
 #endif
 }
 
 namespace views {
 class NativeWidgetAura;
 class WidgetMessageFilter;
+#if defined(USE_X11)
+class X11WindowEventFilter;
+#endif
 
 // Implementation of non-Ash desktop integration code, allowing
 // NativeWidgetAuras to work in a traditional desktop environment.
 class VIEWS_EXPORT DesktopNativeWidgetHelperAura
     : public NativeWidgetHelperAura,
       public aura::RootWindowObserver {
  public:
   explicit DesktopNativeWidgetHelperAura(NativeWidgetAura* widget);
   virtual ~DesktopNativeWidgetHelperAura();
 
@@ skipping 24 matching lines @@
   // An event filter that pre-handles all key events to send them to an IME.
   scoped_ptr<aura::shared::InputMethodEventFilter> input_method_filter_;
 
   // We want some windows (omnibox, status bar) to have their own
   // NativeWidgetAura, but still act as if they're screen bounded toplevel
   // windows.
   bool is_embedded_window_;
 
 #if defined(OS_WIN)
   scoped_ptr<ui::HWNDSubclass> subclass_;
+#elif defined(USE_X11)
+  scoped_ptr<X11WindowEventFilter> x11_window_event_filter_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(DesktopNativeWidgetHelperAura);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_NATIVE_WIDGET_HELPER_AURA_H_