Rename OS(WINDOWS) to OS(WIN)

Source/wtf/Atomics.h

 /*
  * Copyright (C) 2007, 2008, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 15 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Atomics_h
 #define Atomics_h
 
 #include "wtf/CPU.h"
 #include <stdint.h>
 
-#if OS(WINDOWS)
+#if OS(WIN)
 #include <windows.h>
 #elif OS(ANDROID)
 #include <sys/atomics.h>
 #endif
 
 namespace WTF {
 
-#if OS(WINDOWS)
+#if OS(WIN)
 
 ALWAYS_INLINE int atomicIncrement(int volatile* addend) { return InterlockedIncrement(reinterpret_cast<long volatile*>(addend)); }
 ALWAYS_INLINE int atomicDecrement(int volatile* addend) { return InterlockedDecrement(reinterpret_cast<long volatile*>(addend)); }
 
 ALWAYS_INLINE int64_t atomicIncrement(int64_t volatile* addend) { return InterlockedIncrement64(reinterpret_cast<long long volatile*>(addend)); }
 ALWAYS_INLINE int64_t atomicDecrement(int64_t volatile* addend) { return InterlockedDecrement64(reinterpret_cast<long long volatile*>(addend)); }
 
 #elif OS(ANDROID)
 
 // Note, __atomic_{inc, dec}() return the previous value of addend's content.
 ALWAYS_INLINE int atomicIncrement(int volatile* addend) { return __atomic_inc(addend) + 1; }
 ALWAYS_INLINE int atomicDecrement(int volatile* addend) { return __atomic_dec(addend) - 1; }
 
 #else
 
 ALWAYS_INLINE int atomicIncrement(int volatile* addend) { return __sync_add_and_fetch(addend, 1); }
 ALWAYS_INLINE int atomicDecrement(int volatile* addend) { return __sync_sub_and_fetch(addend, 1); }
 
 ALWAYS_INLINE int64_t atomicIncrement(int64_t volatile* addend) { return __sync_add_and_fetch(addend, 1); }
 ALWAYS_INLINE int64_t atomicDecrement(int64_t volatile* addend) { return __sync_sub_and_fetch(addend, 1); }
 
 #endif
 
 } // namespace WTF
 
 using WTF::atomicDecrement;
 using WTF::atomicIncrement;
 
 #endif // Atomics_h