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

Source/wtf/OSAllocator.h

Index: Source/wtf/OSAllocator.h
diff --git a/Source/wtf/OSAllocator.h b/Source/wtf/OSAllocator.h
index a12a46749723660017ef9502e77c4207e6135e5f..89a1328e57a0a95c3b9c8d7532fa7bfa43271c54 100644
--- a/Source/wtf/OSAllocator.h
+++ b/Source/wtf/OSAllocator.h
@@ -83,14 +83,9 @@ inline void* OSAllocator::reserveAndCommit(size_t reserveSize, size_t commitSize
 inline void OSAllocator::decommitAndRelease(void* releaseBase, size_t releaseSize, void* decommitBase, size_t decommitSize)
 {
     ASSERT(decommitBase >= releaseBase && (static_cast<char*>(decommitBase) + decommitSize) <= (static_cast<char*>(releaseBase) + releaseSize));
-#if OS(WINCE)
-    // On most platforms we can actually skip this final decommit; releasing the VM will
-    // implicitly decommit any physical memory in the region. This is not true on WINCE.
-    decommit(decommitBase, decommitSize);

[jamesr, 2013/04/20 01:37:01]

as a followup, could we remove these parameters completely (is this code even
used?)

-#else
     UNUSED_PARAM(decommitBase);
     UNUSED_PARAM(decommitSize);
-#endif
+
     releaseDecommitted(releaseBase, releaseSize);
 }