Changes to prepare for allowing script snapshots to be taken after running the main application

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 555079b258fbff6b532171edf5440544e744678d..a271d16546362b10a431eec655d358dcb7b8b66f 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -4352,6 +4352,10 @@ class Code : public Object {
     DISALLOW_COPY_AND_ASSIGN(FindRawCodeVisitor);
   };
 
+  static bool IsOptimized(RawCode* code) {
+    return Code::OptimizedBit::decode(code->ptr()->state_bits_);
+  }
+
   static const intptr_t kEntrySize = sizeof(int32_t);  // NOLINT
 
   void set_compile_timestamp(int64_t timestamp) const {