Rename OS(WINDOWS) to OS(WIN)

Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 188 matching lines @@
 void Page::updateAutoscrollRenderer()
 {
     m_autoscrollController->updateAutoscrollRenderer();
 }
 
 void Page::updateDragAndDrop(Node* dropTargetNode, const IntPoint& eventPosition, double eventTime)
 {
     m_autoscrollController->updateDragAndDrop(dropTargetNode, eventPosition, eventTime);
 }
 
-#if OS(WINDOWS)
+#if OS(WIN)
 void Page::handleMouseReleaseForPanScrolling(Frame* frame, const PlatformMouseEvent& point)
 {
     m_autoscrollController->handleMouseReleaseForPanScrolling(frame, point);
 }
 
 void Page::startPanScrolling(RenderBox* renderer, const IntPoint& point)
 {
     m_autoscrollController->startPanScrolling(renderer, point);
 }
 #endif
@@ skipping 528 matching lines @@
     , dragClient(0)
     , inspectorClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace WebCore