Avoid pre-aging when debugger is active

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 8e187a49f331ea25eb8881eb1b337473d425549a..d8771cb7021490171bd009f8e73135143b7f780a 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -35,6 +35,7 @@
 #include "codegen.h"
 #include "cpu-profiler.h"
 #include "debug.h"
+#include "isolate-inl.h"
 #include "runtime.h"
 
 namespace v8 {
@@ -926,7 +927,7 @@ void MacroAssembler::Prologue(PrologueFrameMode frame_mode) {
         this, kNoCodeAgeSequenceLength * Assembler::kInstrSize);
     // The following three instructions must remain together and unmodified
     // for code aging to work properly.
-    if (FLAG_optimize_for_size && FLAG_age_code) {
+    if (isolate()->IsCodePreAgingActive()) {
       // Pre-age the code.
       Code* stub = Code::GetPreAgedCodeAgeStub(isolate());
       add(r0, pc, Operand(-8));