Simplify references to command line flags.

unittest/BitcodeMunge.h

Index: unittest/BitcodeMunge.h
diff --git a/unittest/BitcodeMunge.h b/unittest/BitcodeMunge.h
index 03c158156a311d2cc415151c22cfbe60fb25f1e3..e74ee1bc1ce8be5dd02ed4827f2ec79e98021150 100644
--- a/unittest/BitcodeMunge.h
+++ b/unittest/BitcodeMunge.h
@@ -33,8 +33,7 @@ class SubzeroBitcodeMunger : public llvm::NaClBitcodeMunger {
 public:
   SubzeroBitcodeMunger(const uint64_t Records[], size_t RecordSize,
                        uint64_t RecordTerminator)
-      : llvm::NaClBitcodeMunger(Records, RecordSize, RecordTerminator),
-        Flags(Ice::GlobalContext::Flags) {
+      : llvm::NaClBitcodeMunger(Records, RecordSize, RecordTerminator) {
     resetMungeFlags();
   }
 
@@ -50,9 +49,6 @@ public:
     return runTest(NoMunges, 0, DisableTranslation);
   }
 
-  /// Flags to use to run tests. Use to change default assumptions.
-  Ice::ClFlags &Flags;
-
 private:
   void resetMungeFlags();
 };