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

Source/wtf/RefCountedLeakCounter.h

Index: Source/wtf/RefCountedLeakCounter.h
diff --git a/Source/wtf/RefCountedLeakCounter.h b/Source/wtf/RefCountedLeakCounter.h
index 8d894dd91324507fd3277a211bd9582d2ff75881..9ff68dd8b89ade7e877a3ad6db3947bc3f096254 100644
--- a/Source/wtf/RefCountedLeakCounter.h
+++ b/Source/wtf/RefCountedLeakCounter.h
@@ -38,7 +38,7 @@ namespace WTF {
 
 #ifndef NDEBUG
     private:
-#if COMPILER(MINGW) || COMPILER(MSVC7_OR_LOWER) || OS(WINCE)
+#if COMPILER(MINGW) || COMPILER(MSVC7_OR_LOWER)
         int m_count;
 #else
         volatile int m_count;