Add a token position to LoadLocal, StoreLocal, and LoadStaticField instructions

runtime/vm/flow_graph_builder.h

Index: runtime/vm/flow_graph_builder.h
diff --git a/runtime/vm/flow_graph_builder.h b/runtime/vm/flow_graph_builder.h
index 5511db4dd47f4ca771feb8ec92a8b6260a3db0ca..d448a56a32cc7cbe3b77558674ab251e2f37f0d2 100644
--- a/runtime/vm/flow_graph_builder.h
+++ b/runtime/vm/flow_graph_builder.h
@@ -304,8 +304,11 @@ class EffectGraphVisitor : public AstNodeVisitor {
   Definition* BuildStoreExprTemp(Value* value);
   Definition* BuildLoadExprTemp();
 
-  Definition* BuildStoreLocal(const LocalVariable& local, Value* value);
-  Definition* BuildLoadLocal(const LocalVariable& local);
+  Definition* BuildStoreLocal(const LocalVariable& local,
+                              Value* value,
+                              intptr_t token_pos = Scanner::kNoSourcePos);
+  Definition* BuildLoadLocal(const LocalVariable& local,
+                             intptr_t token_pos = Scanner::kNoSourcePos);
   LoadLocalInstr* BuildLoadThisVar(LocalScope* scope);
   LoadFieldInstr* BuildNativeGetter(
       NativeBodyNode* node,