Update Subzero to start parsing PNaCl bitcode files.

src/PNaClTranslator.h

+//===- subzero/src/PNaClTranslator.h - ICE from bitcode ---------*- C++ -*-===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the PNaCl bitcode file to ICE, to machine code
+// translator.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBZERO_SRC_PNACLTRANSLATOR_H
+#define SUBZERO_SRC_PNACLTRANSLATOR_H
+
+#include "IceTranslator.h"
+#include <string>
+
+namespace Ice {
+
+class PNaClTranslator : public Translator {
+public:
+  PNaClTranslator(GlobalContext *Ctx, ClFlags &Flags)
+      : Translator(Ctx, Flags) {}
+  // Reads the PNaCl bitcode file and translates to ICE, which is then
+  // converted to machine code. Sets ExitStatus to non-zero if any
+  // errors occurred.
+  void translate(const std::string &IRFilename);
+
+private:
+  PNaClTranslator(const PNaClTranslator &) LLVM_DELETED_FUNCTION;
+  PNaClTranslator &operator=(const PNaClTranslator &) LLVM_DELETED_FUNCTION;
+};
+}
+
+#endif // SUBZERO_SRC_PNACLTRANSLATOR_H