Revert "Remove support for MSVC"

sky/engine/wtf/NullPtr.cpp

Index: sky/engine/wtf/NullPtr.cpp
diff --git a/sky/engine/core/LICENSE-APPLE b/sky/engine/wtf/NullPtr.cpp
similarity index 85%
copy from sky/engine/core/LICENSE-APPLE
copy to sky/engine/wtf/NullPtr.cpp
index f29b41c3b2a316522d0e3493a28e96a851697b2e..4f6bfa39d03c2bb6708d33a932b5762683d3275a 100644
--- a/sky/engine/core/LICENSE-APPLE
+++ b/sky/engine/wtf/NullPtr.cpp
@@ -1,4 +1,6 @@
-Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+/*
+
+Copyright (C) 2010 Apple Inc. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
@@ -19,3 +21,14 @@ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#include "config.h"
+#include "NullPtr.h"
+
+#if !(COMPILER_SUPPORTS(CXX_NULLPTR) || defined(_LIBCPP_VERSION))
+
+const std::nullptr_t nullptr;
+
+#endif