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

Source/wtf/text/WTFString.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 385 matching lines @@
     if (!m_impl)
         return 0;
     if (m_impl->hasTerminatingNullCharacter())
         return m_impl->characters();
     m_impl = StringImpl::createWithTerminatingNullCharacter(*m_impl);
     return m_impl->characters();
 }
 
 String String::format(const char *format, ...)
 {
-#if OS(WINCE)
     va_list args;
     va_start(args, format);
 
-    Vector<char, 256> buffer;
-
-    int bufferSize = 256;
-    buffer.resize(bufferSize);
-    for (;;) {
-        int written = vsnprintf(buffer.data(), bufferSize, format, args);
-        va_end(args);
-
-        if (written == 0)
-            return String("");
-        if (written > 0)
-            return StringImpl::create(reinterpret_cast<const LChar*>(buffer.data()), written);
-        
-        bufferSize <<= 1;
-        buffer.resize(bufferSize);
-        va_start(args, format);
-    }
-
-#else
-    va_list args;
-    va_start(args, format);
-
     Vector<char, 256> buffer;
 
     // Do the format once to get the length.
 #if COMPILER(MSVC)
     int result = _vscprintf(format, args);
 #else
     char ch;
     int result = vsnprintf(&ch, 1, format, args);
     // We need to call va_end() and then va_start() again here, as the
     // contents of args is undefined after the call to vsnprintf
@@ skipping 11 matching lines @@
         return String();
     unsigned len = result;
     buffer.grow(len + 1);
     
     // Now do the formatting again, guaranteed to fit.
     vsnprintf(buffer.data(), buffer.size(), format, args);
 
     va_end(args);
     
     return StringImpl::create(reinterpret_cast<const LChar*>(buffer.data()), len);
-#endif
 }
 
 String String::number(int number)
 {
     return numberToStringSigned<String>(number);
 }
 
 String String::number(unsigned int number)
 {
     return numberToStringUnsigned<String>(number);
@@ skipping 765 matching lines @@
     buffer.append('\0');
     return buffer;
 }
 
 Vector<char> asciiDebug(String& string)
 {
     return asciiDebug(string.impl());
 }
 
 #endif