Run field initializers for new instance fields after a reload

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 32c4a6cc6beab3641abd249b659deae81c10e105..cc34297944e9145101747e5caa4457fbf55b0f17 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -2844,6 +2844,11 @@ class Function : public Object {
     return RoundedAllocationSize(sizeof(RawFunction));
   }
 
+  static RawFunction* EvaluateHelper(const Class& cls,
+                                     const String& expr,
+                                     const Array& param_names,
+                                     bool is_static);
+
   static RawFunction* New(const String& name,
                           RawFunction::Kind kind,
                           bool is_static,
@@ -3235,6 +3240,8 @@ class Field : public Object {
 
   TokenPosition token_pos() const { return raw_ptr()->token_pos_; }
 
+  RawString* InitializingExpression() const;
+
   bool has_initializer() const {
     return HasInitializerBit::decode(raw_ptr()->kind_bits_);
   }
@@ -3606,6 +3613,7 @@ class Script : public Object {
   RawLibrary* FindLibrary() const;
   RawString* GetLine(intptr_t line_number,
                      Heap::Space space = Heap::kNew) const;
+  RawString* GetSnippet(TokenPosition from, TokenPosition to) const;
   RawString* GetSnippet(intptr_t from_line,
                         intptr_t from_column,
                         intptr_t to_line,