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

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 11a0cc90a9e4bbcff50b111ee925864c600c793d..505d4a5e05f4186356e796db06339fd677fb0928 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -19,12 +19,13 @@
 namespace v8 {
 namespace internal {
 
-MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size)
+MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size,
+                               CodeObjectRequired create_code_object)
     : Assembler(arg_isolate, buffer, size),
       generating_stub_(false),
       has_frame_(false),
       has_double_zero_reg_set_(false) {
-  if (isolate() != NULL) {
+  if (create_code_object == CodeObjectRequired::kYes) {
     code_object_ =
         Handle<Object>::New(isolate()->heap()->undefined_value(), isolate());
   }
@@ -5780,12 +5781,11 @@ bool AreAliased(Register reg1,
 }
 
 
-CodePatcher::CodePatcher(byte* address,
-                         int instructions,
+CodePatcher::CodePatcher(byte* address, int instructions,
                          FlushICache flush_cache)
     : address_(address),
       size_(instructions * Assembler::kInstrSize),
-      masm_(NULL, address, size_ + Assembler::kGap),
+      masm_(NULL, address, size_ + Assembler::kGap, CodeObjectRequired::kNo),
       flush_cache_(flush_cache) {
   // Create a new macro assembler pointing to the address of the code to patch.
   // The size is adjusted with kGap on order for the assembler to generate size