Use entities in runtime_types

pkg/compiler/lib/src/elements/resolution_types.dart

Index: pkg/compiler/lib/src/elements/resolution_types.dart
diff --git a/pkg/compiler/lib/src/elements/resolution_types.dart b/pkg/compiler/lib/src/elements/resolution_types.dart
index 5cd27d3dc7c2ddcf04946454dea1195a20be9dfd..19b67aa0b1353456eed31f73e2eb87e73eca40dd 100644
--- a/pkg/compiler/lib/src/elements/resolution_types.dart
+++ b/pkg/compiler/lib/src/elements/resolution_types.dart
@@ -1104,6 +1104,16 @@ class Types implements DartTypes {
     return cls.supertype;
   }
 
+  @override
+  Iterable<InterfaceType> getSupertypes(ClassElement cls) {
+    assert(invariant(cls, cls.allSupertypes != null,
+        message: 'Supertypes have not been computed for $cls.'));
+    return cls.allSupertypes;
+  }
+
+  @override
+  FunctionType getCallType(ResolutionInterfaceType type) => type.callType;
+
   /// Flatten [type] by recursively removing enclosing `Future` annotations.
   ///
   /// Defined in the language specification as: