Fix compiler error in sandbox util in case exception is enabled....

sandbox/src/sandbox_nt_util.cc

Index: sandbox/src/sandbox_nt_util.cc
===================================================================
--- sandbox/src/sandbox_nt_util.cc	(revision 50355)
+++ sandbox/src/sandbox_nt_util.cc	(working copy)
@@ -560,6 +560,12 @@
   }
 }
 
+void operator delete(void* memory, sandbox::AllocationType type,
+                     void* near_to) {
+  UNREFERENCED_PARAMETER(near_to);
+  operator delete(memory, type);
+}
+
 void* __cdecl operator new(size_t size, void* buffer,
                            sandbox::AllocationType type) {
   UNREFERENCED_PARAMETER(size);