ui: Rename ui_export.h to ui_base_export.h

ui/base/work_area_watcher_observer.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_BASE_WORK_AREA_WATCHER_OBSERVER_H_
 #define UI_BASE_WORK_AREA_WATCHER_OBSERVER_H_
 
-#include "ui/base/ui_export.h"
+#include "ui/base/ui_base_export.h"
 
 namespace ui {
 
 // This interface should be implemented by classes that want to be notified
 // when the work area has changed due to something like screen resolution or
 // taskbar changes.
-class UI_EXPORT WorkAreaWatcherObserver {
+class UI_BASE_EXPORT WorkAreaWatcherObserver {
  public:
   virtual void WorkAreaChanged() = 0;
 
  protected:
   virtual ~WorkAreaWatcherObserver() {}
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_WORK_AREA_WATCHER_OBSERVER_H_