Make whether or not a Code object should be created by masm explicit

src/arm64/macro-assembler-arm64.h

Index: src/arm64/macro-assembler-arm64.h
diff --git a/src/arm64/macro-assembler-arm64.h b/src/arm64/macro-assembler-arm64.h
index 9c3b5b09538829a2c4082275b34ef544cfc1475e..d641699e13dd451c2f68b4267599085a320d0838 100644
--- a/src/arm64/macro-assembler-arm64.h
+++ b/src/arm64/macro-assembler-arm64.h
@@ -146,7 +146,8 @@ enum SeqStringSetCharCheckIndexType { kIndexIsSmi, kIndexIsInteger32 };
 
 class MacroAssembler : public Assembler {
  public:
-  MacroAssembler(Isolate* isolate, byte * buffer, unsigned buffer_size);
+  MacroAssembler(Isolate* isolate, byte* buffer, unsigned buffer_size,
+                 bool create_code_object);
 
   inline Handle<Object> CodeObject();