Move a bunch of windows stuff from ui/base/win to ui/gfx/win

ui/base/win/foreground_helper.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/base/win/foreground_helper.h"
 
 #include "base/logging.h"
-#include "ui/base/win/window_impl.h"
+#include "ui/gfx/win/window_impl.h"
 
 namespace ui {
 
 // static
 HRESULT ForegroundHelper::SetForeground(HWND window) {
   DCHECK(::IsWindow(window));
   ForegroundHelper foreground_helper;
   return foreground_helper.ForegroundHotKey(window);
 }
 
@@ skipping 56 matching lines @@
   // Handle the registered Hotkey being pressed.
 LRESULT ForegroundHelper::OnHotKey(UINT message,
                                    WPARAM wparam,
                                    LPARAM lparam,
                                    BOOL& handled) {
   SetForegroundWindow(window_);
   return 1;
 }
 
 }  // namespace ui