[serializer] add options to compile eagerly and pre-age for code cache.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 844e86327e0c4ad9f2fa4b5a7ba5bab81871cfdd..72690e4f630ef044b3df5c4fd4fa1b0b3df8b969 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -14356,6 +14356,12 @@ void Code::MakeYoung(Isolate* isolate) {
   if (sequence != NULL) MakeCodeAgeSequenceYoung(sequence, isolate);
 }
 
+void Code::PreAge(Isolate* isolate) {
+  byte* sequence = FindCodeAgeSequence();
+  if (sequence != NULL) {
+    PatchPlatformCodeAge(isolate, sequence, kPreAgedCodeAge, NO_MARKING_PARITY);
+  }
+}
 
 void Code::MarkToBeExecutedOnce(Isolate* isolate) {
   byte* sequence = FindCodeAgeSequence();
@@ -14365,7 +14371,6 @@ void Code::MarkToBeExecutedOnce(Isolate* isolate) {
   }
 }
 
-
 void Code::MakeOlder(MarkingParity current_parity) {
   byte* sequence = FindCodeAgeSequence();
   if (sequence != NULL) {