Wrap MSVC-specific pragmas. As -Wunknown-pragmas has been disabled for wtf,...

webkit/port/platform/chromium/PopupMenuChromium.h

 // Copyright (c) 2006-2008 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 PopupMenuChromium_h
 #define PopupMenuChromium_h
 
-#pragma warning(push, 0)
+#include "config.h"
+
+#if COMPILER(MSVC)
+__pragma(warning(push, 0))
+#endif
 #include "PopupMenuClient.h"
 
 #include "FramelessScrollView.h"
 #include "IntRect.h"
-#pragma warning(pop)
+#if COMPILER(MSVC)
+__pragma(warning(pop))
+#endif
 
 
 namespace WebCore {
     
 class PopupListBox;
 
 // TODO(darin): Our FramelessScrollView classes need to implement HostWindow!
 
 // This class holds a PopupListBox (see cpp file).  Its sole purpose is to be
 // able to draw a border around its child.  All its paint/event handling is just
@@ skipping 53 matching lines @@
 
     RefPtr<PopupListBox> m_listBox;
 
     // Whether the window showing this popup should be focused when shown.
     bool m_focusOnShow;
 };
 
 }
 
 #endif // PopupMenuChromium_h