Remove OS(WINCE) as blink and chromium does not support WinCe.

Source/wtf/ThreadingWin.cpp

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile, Inc. All rights reserved.
  *
  * 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
@@ skipping 89 matching lines @@
 #include <wtf/MathExtras.h>
 #include <wtf/OwnPtr.h>
 #include <wtf/PassOwnPtr.h>
 #include <wtf/RandomNumberSeed.h>
 #include <wtf/WTFThreadData.h>
 
 #if !USE(PTHREADS) && OS(WINDOWS)
 #include "ThreadSpecific.h"
 #endif
 
-#if !OS(WINCE)
 #include <process.h>
-#endif
 
 #if HAVE(ERRNO_H)
 #include <errno.h>
 #endif
 
 namespace WTF {
 
 // MS_VC_EXCEPTION, THREADNAME_INFO, and setThreadNameInternal all come from <http://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx>.
 static const DWORD MS_VC_EXCEPTION = 0x406D1388;
 
@@ skipping 98 matching lines @@
 #endif
 
     return 0;
 }
 
 ThreadIdentifier createThreadInternal(ThreadFunction entryPoint, void* data, const char* threadName)
 {
     unsigned threadIdentifier = 0;
     ThreadIdentifier threadID = 0;
     OwnPtr<ThreadFunctionInvocation> invocation = adoptPtr(new ThreadFunctionInvocation(entryPoint, data));
-#if OS(WINCE)
-    // This is safe on WINCE, since CRT is in the core and innately multithreaded.
-    // On desktop Windows, need to use _beginthreadex (not available on WinCE) if using any CRT functions
-    HANDLE threadHandle = CreateThread(0, 0, (LPTHREAD_START_ROUTINE)wtfThreadEntryPoint, invocation.get(), 0, (LPDWORD)&threadIdentifier);
-#else
     HANDLE threadHandle = reinterpret_cast<HANDLE>(_beginthreadex(0, 0, wtfThreadEntryPoint, invocation.get(), 0, &threadIdentifier));
-#endif
     if (!threadHandle) {
-#if OS(WINCE)
-        LOG_ERROR("Failed to create thread at entry point %p with data %p: %ld", entryPoint, data, ::GetLastError());
-#elif !HAVE(ERRNO_H)
+#if !HAVE(ERRNO_H)
         LOG_ERROR("Failed to create thread at entry point %p with data %p.", entryPoint, data);
 #else
         LOG_ERROR("Failed to create thread at entry point %p with data %p: %ld", entryPoint, data, errno);
 #endif
         return 0;
     }
 
     // The thread will take ownership of invocation.
     ThreadFunctionInvocation* leakedInvocation = invocation.leakPtr();
     UNUSED_PARAM(leakedInvocation);
@@ skipping 261 matching lines @@
     // Time is too far in the future (and would overflow unsigned long) - wait forever.
     if (absoluteTime - currentTime > static_cast<double>(INT_MAX) / 1000.0)
         return INFINITE;
 
     return static_cast<DWORD>((absoluteTime - currentTime) * 1000.0);
 }
 
 } // namespace WTF
 
 #endif // OS(WINDOWS)