Rebased PNaCl localmods in LLVM to 223109

lib/Target/X86/MCTargetDesc/X86MCNaCl.h

+//===-- X86MCNaCl.h - Prototype for CustomExpandInstNaClX86   ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef X86MCNACL_H
+#define X86MCNACL_H
+
+namespace llvm {
+class MCInst;
+class MCStreamer;
+struct X86MCNaClSFIState {
+  unsigned PrefixSaved;
+  bool PrefixPass;
+  bool EmitRaw;
+};
+bool CustomExpandInstNaClX86(const MCSubtargetInfo &STI, const MCInst &Inst,
+                             MCStreamer &Out, X86MCNaClSFIState &State);
+}
+
+#endif