Subzero: Add -Wshadow to the build.

unittest/BitcodeMunge.h

 //===- BitcodeMunge.h - Subzero Bitcode Munger ------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // Test harness for testing malformed bitcode files in Subzero. Uses NaCl's
 // bitcode munger to do this.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef SUBZERO_UNITTEST_BITCODEMUNGE_H
 #define SUBZERO_UNITTEST_BITCODEMUNGE_H
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wunused-parameter"
+#pragma clang diagnostic ignored "-Wshadow"
 #include "llvm/Bitcode/NaCl/NaClBitcodeMunge.h"
 #pragma clang diagnostic pop
 
 #include "IceClFlags.h"
 
 namespace IceTest {
 
 // Class to run tests on Subzero's bitcode parser. Runs a Subzero
 // translation, using (possibly) edited bitcode record values.  For
 // more details on how to represent the input arrays, see
@@ skipping 21 matching lines @@
   /// Flags to use to run tests. Use to change default assumptions.
   Ice::ClFlags Flags;
 
 private:
   void resetMungeFlags();
 };
 
 } // end of namespace IceTest
 
 #endif // SUBZERO_UNITTEST_BITCODEMUNGE_H