Adds View::GetNativeTheme() to get the NativeTheme. The interesting

ui/views/widget/desktop_root_window_host_linux.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/desktop_root_window_host_linux.h"
 
 #include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
 #include "base/message_pump_aurax11.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/client/user_action_client.h"
 #include "ui/aura/desktop/desktop_activation_client.h"
 #include "ui/aura/desktop/desktop_dispatcher_client.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/shared/compound_event_filter.h"
 #include "ui/aura/shared/input_method_event_filter.h"
 #include "ui/aura/window_property.h"
+#include "ui/base/native_theme/native_theme.h"
 #include "ui/base/touch/touch_factory.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/views/ime/input_method_bridge.h"
 #include "ui/views/widget/desktop_capture_client.h"
 #include "ui/views/widget/desktop_layout_manager.h"
 #include "ui/views/widget/desktop_native_widget_aura.h"
 #include "ui/views/widget/desktop_screen_position_client.h"
 #include "ui/views/widget/x11_desktop_handler.h"
 #include "ui/views/widget/x11_desktop_window_move_client.h"
 #include "ui/views/widget/x11_window_event_filter.h"
@@ skipping 48 matching lines @@
       cursor_loader_(),
       current_cursor_(ui::kCursorNull),
       cursor_shown_(true),
       native_widget_delegate_(native_widget_delegate),
       desktop_native_widget_aura_(desktop_native_widget_aura) {
 }
 
 DesktopRootWindowHostLinux::~DesktopRootWindowHostLinux() {
 }
 
+// static
+ui::NativeTheme* DesktopRootWindowLinux::GetNativeTheme(aura::Window* window) {
+  return NativeTheme::instance();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopRootWindowHostLinux, private:
 
 void DesktopRootWindowHostLinux::InitX11Window(
     const Widget::InitParams& params) {
   unsigned long attribute_mask = CWBackPixmap;
   XSetWindowAttributes swa;
   memset(&swa, 0, sizeof(swa));
   swa.background_pixmap = None;
 
@@ skipping 1015 matching lines @@
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura,
     const gfx::Rect& initial_bounds) {
   return new DesktopRootWindowHostLinux(native_widget_delegate,
                                         desktop_native_widget_aura,
                                         initial_bounds);
 }
 
 }  // namespace views