Cache compile-time constants on the script object, sometimes.

runtime/vm/isolate_reload.h

Index: runtime/vm/isolate_reload.h
diff --git a/runtime/vm/isolate_reload.h b/runtime/vm/isolate_reload.h
index de6ff001d7f72fbd2ee50d8c48702a3dc60b85f3..1e311c2e5669280b01cdd21255c7ca3b9428310e 100644
--- a/runtime/vm/isolate_reload.h
+++ b/runtime/vm/isolate_reload.h
@@ -112,9 +112,6 @@ class IsolateReloadContext {
 
   void ClearReplacedObjectBits();
 
-  void BuildCleanScriptSet();
-  void FilterCompileTimeConstants();
-
   // atomic_install:
   void MarkAllFunctionsForRecompilation();
   void ResetUnoptimizedICsOnStack();
@@ -158,8 +155,6 @@ class IsolateReloadContext {
   RawObject** from() { return reinterpret_cast<RawObject**>(&script_uri_); }
   RawString* script_uri_;
   RawError* error_;
-  RawArray* clean_scripts_set_storage_;
-  RawArray* compile_time_constants_;
   RawArray* old_classes_set_storage_;
   RawArray* class_map_storage_;
   RawArray* old_libraries_set_storage_;