Fix js_model/model_test

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

Index: pkg/compiler/lib/src/js_model/elements.dart
diff --git a/pkg/compiler/lib/src/js_model/elements.dart b/pkg/compiler/lib/src/js_model/elements.dart
index d1bde087e14c97f89529b7383c167b1444a382a1..c9a53266596828c15214a4c6ac8c0820f7923c80 100644
--- a/pkg/compiler/lib/src/js_model/elements.dart
+++ b/pkg/compiler/lib/src/js_model/elements.dart
@@ -174,7 +174,11 @@ class JsElementCreatorMixin {
 
   Local createLocalFunction(String name, MemberEntity memberContext,
       Entity executableContext, FunctionType functionType) {
-    throw new UnsupportedError('JsElementCreatorMixin.createLocalFunction');
+    // TODO(efortuna, johnniwinther): This function should not be called once
+    // the K + J element situation has been properly sorted out. Ultimately this
+    // should throw.
+    return new JLocalFunction(
+        name, memberContext, executableContext, functionType);
   }
 
   LibraryEntity convertLibrary(IndexedLibrary library) {
@@ -517,6 +521,19 @@ class JTypeVariable implements TypeVariableEntity {
       '${jsElementPrefix}type_variable(${typeDeclaration.name}.$name)';
 }
 
+class JLocalFunction implements Local {
+  final String name;
+  final MemberEntity memberContext;
+  final Entity executableContext;
+  final FunctionType functionType;
+
+  JLocalFunction(
+      this.name, this.memberContext, this.executableContext, this.functionType);
+
+  String toString() => '${jsElementPrefix}local_function'
+      '(${memberContext.name}.${name ?? '<anonymous>'})';
+}
+
 class JsClosedWorld extends ClosedWorldBase with KernelClosedWorldMixin {
   final JsKernelToElementMap elementMap;