Remove support for the DeferredLibrary annotation and remove tests of it

tests/lib/async/deferred/deferred_fail_to_load_test.dart

Index: tests/lib/async/deferred/deferred_fail_to_load_test.dart
diff --git a/tests/lib/async/deferred/deferred_fail_to_load_test.dart b/tests/lib/async/deferred/deferred_fail_to_load_test.dart
deleted file mode 100644
index dbecad1969fc28c679c6caf5be80c417381de49d..0000000000000000000000000000000000000000
--- a/tests/lib/async/deferred/deferred_fail_to_load_test.dart
+++ /dev/null
@@ -1,24 +0,0 @@
-import 'dart:isolate';
-import 'dart:async';
-import 'dart:html';
-import 'package:unittest/unittest.dart';
-
-@a import 'deferred_in_isolate_lib.dart' as lib1;
-@b import 'deferred_library.dart' as lib2;
-
-const a = const DeferredLibrary("lib1");
-const b = const DeferredLibrary("NonExistingFile", uri: "wrong/wrong.js");

[sigurdm, 2014/07/30 11:03:21]

Unfortunately for this test the new syntax does not give us a way to specify the
uri of the part-file. So there is no way to test a bad uri.

[hausner, 2014/07/30 16:18:36]

I thought the new mechanism for catching load errors is that the future
completes with an error.

import "missing_file.dart" deferred as d;
...
d.loadLibrary().then((_) {
  ...
},
onError: (e) {
  print("load error: $e");
});

This is supposed to print the error when "missing_file.dart" can't be found.

I have a CL out that implements this behavior in the VM.

-
-main() {
-  test("Deferred loading failing to load", () {
-    a.load().then(expectAsync((_) {
-      expect(lib1.f(), equals("hi"));
-    }));
-    b.load().then((_) {
-      expect(false, true);
-      lib2.foo("");
-    }).catchError(expectAsync((_) {
-      expect(true, true);
-      }), test: (e) => e is DeferredLoadException);
-  });
-}