Add local variable declaration token position to service protocol

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 83583801afb6a96cd87847fe6dede4ce03906c76..5f8ddbf1d94d59bbc00a9018c6531d13f2c1f9ab 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -5151,6 +5151,10 @@ class ContextScope : public Object {
   TokenPosition TokenIndexAt(intptr_t scope_index) const;
   void SetTokenIndexAt(intptr_t scope_index, TokenPosition token_pos) const;
 
+  TokenPosition DeclarationTokenIndexAt(intptr_t scope_index) const;
+  void SetDeclarationTokenIndexAt(intptr_t scope_index,
+                                  TokenPosition declaration_token_pos) const;
+
   RawString* NameAt(intptr_t scope_index) const;
   void SetNameAt(intptr_t scope_index, const String& name) const;