Extract the AST specific part of NoSuchMethodRegistry

pkg/compiler/lib/src/inferrer/type_graph_nodes.dart

Index: pkg/compiler/lib/src/inferrer/type_graph_nodes.dart
diff --git a/pkg/compiler/lib/src/inferrer/type_graph_nodes.dart b/pkg/compiler/lib/src/inferrer/type_graph_nodes.dart
index 9298d5120654ef551e9c6d6d3d02b3e615d96f36..5401212ccbe94fa6e105a053059058edb587a2b4 100644
--- a/pkg/compiler/lib/src/inferrer/type_graph_nodes.dart
+++ b/pkg/compiler/lib/src/inferrer/type_graph_nodes.dart
@@ -857,7 +857,7 @@ class DynamicCallSiteTypeInformation extends CallSiteTypeInformation {
       return e is FunctionElement &&
           e.isInstanceMember &&
           e.name == Identifiers.noSuchMethod_ &&
-          inferrer.backend.isComplexNoSuchMethod(e);
+          inferrer.backend.noSuchMethodRegistry.isComplex(e);
     });
   }