Adds some ifdefs so that test_shell can be compiled on linux...

chrome/common/gfx/path.h

Index: chrome/common/gfx/path.h
===================================================================
--- chrome/common/gfx/path.h	(revision 13475)
+++ chrome/common/gfx/path.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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.
 
@@ -25,7 +25,7 @@
   // Creates a HRGN from the path. The caller is responsible for freeing
   // resources used by this region.  This only supports polygon paths.
   HRGN CreateHRGN() const;
-#elif defined(OS_LINUX)
+#elif defined(TOOLKIT_GTK)
   // Creates a Gdkregion from the path. The caller is responsible for freeing
   // resources used by this region.  This only supports polygon paths.
   GdkRegion* CreateGdkRegion() const;