Sort class IDs before training AppJIT snapshots

runtime/vm/isolate.h

Index: runtime/vm/isolate.h
diff --git a/runtime/vm/isolate.h b/runtime/vm/isolate.h
index 72abde65431233bce4151e4e900a48e00864b96a..115a3a9d6ab7a998565c936479bd94e8f3cc2357 100644
--- a/runtime/vm/isolate.h
+++ b/runtime/vm/isolate.h
@@ -559,6 +559,8 @@ class Isolate : public BaseIsolate {
   bool all_classes_finalized() const { return all_classes_finalized_; }
   void set_all_classes_finalized(bool value) { all_classes_finalized_ = value; }
 
+  void set_remapping_cids(bool value) { remapping_cids_ = value; }
+
   // True during top level parsing.
   bool IsTopLevelParsing() {
     const intptr_t value =
@@ -806,6 +808,7 @@ class Isolate : public BaseIsolate {
 
   bool compilation_allowed_;
   bool all_classes_finalized_;
+  bool remapping_cids_;
 
   // Isolate list next pointer.
   Isolate* next_;