Remove last dependencies on ui/base from ui/gfx

ui/base/win/foreground_helper.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_WIN_FOREGROUND_HELPER_H_
 #define UI_BASE_WIN_FOREGROUND_HELPER_H_
 
 #include "base/logging.h"
+#include "ui/base/ui_export.h"
 #include "ui/gfx/win/window_impl.h"
 
 namespace ui {
 
 // Helper class for moving a window to the foreground.
 // Windows XP and later will not allow a window which is in the background to
 // move to the foreground, unless requested by the current window in the
 // foreground.  For automated testing, we really want some of our windows
 // to be capable of moving to the foreground.
 //
@@ skipping 18 matching lines @@
   LRESULT OnHotKey(UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled);
 
   HWND window_;
 
   DISALLOW_COPY_AND_ASSIGN(ForegroundHelper);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_WIN_FOREGROUND_HELPER_H_