Remove a bunch of OS(MACOSX) code

sky/engine/wtf/StringExtras.h

Index: sky/engine/wtf/StringExtras.h
diff --git a/sky/engine/wtf/StringExtras.h b/sky/engine/wtf/StringExtras.h
index f58985066c06e9ff313ef2122019b960754381fc..256f10808a5cd870f2ecac88342eca3121a27403 100644
--- a/sky/engine/wtf/StringExtras.h
+++ b/sky/engine/wtf/StringExtras.h
@@ -26,70 +26,10 @@
 #ifndef WTF_StringExtras_h
 #define WTF_StringExtras_h
 
-#if OS(POSIX)
-#define HAVE_STRINGS_H 1
-#endif
-
-#if !defined(HAVE_STRNSTR)

[ojan, 2014/11/11 23:35:48]

Do we know this is always false?

-#if OS(MACOSX) || (OS(FREEBSD) && !defined(__GLIBC__))
-#define HAVE_STRNSTR 1
-#endif
-#endif
-
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
-
-#if HAVE(STRINGS_H)
 #include <strings.h>
-#endif
-
-#if COMPILER(MSVC)
-// FIXME: why a COMPILER check instead of OS? also, these should be HAVE checks
-
-inline int snprintf(char* buffer, size_t count, const char* format, ...)
-{
-    int result;
-    va_list args;
-    va_start(args, format);
-    result = _vsnprintf(buffer, count, format, args);
-    va_end(args);
-
-    // In the case where the string entirely filled the buffer, _vsnprintf will not
-    // null-terminate it, but snprintf must.
-    if (count > 0)
-        buffer[count - 1] = '\0';
-
-    return result;
-}
-
-inline double wtf_vsnprintf(char* buffer, size_t count, const char* format, va_list args)
-{
-    int result = _vsnprintf(buffer, count, format, args);
-
-    // In the case where the string entirely filled the buffer, _vsnprintf will not
-    // null-terminate it, but vsnprintf must.
-    if (count > 0)
-        buffer[count - 1] = '\0';
-
-    return result;
-}
-
-// Work around a difference in Microsoft's implementation of vsnprintf, where
-// vsnprintf does not null terminate the buffer. WebKit can rely on the null termination.
-#define vsnprintf(buffer, count, format, args) wtf_vsnprintf(buffer, count, format, args)
-
-inline int strncasecmp(const char* s1, const char* s2, size_t len)
-{
-    return _strnicmp(s1, s2, len);
-}
-
-inline int strcasecmp(const char* s1, const char* s2)
-{
-    return _stricmp(s1, s2);
-}
-
-#endif
 
 #if !HAVE(STRNSTR)