Insert checks before deferred calls and accesses.

tests/compiler/dart2js_extra/deferred/deferred_function_test.dart

Index: tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
diff --git a/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart b/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
index 09b27f06dcd506c47a9f2703280cdad9a4120e52..5e2de213b3e5f5bd12f82da68c10901d81550c02 100644
--- a/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
+++ b/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
@@ -14,7 +14,7 @@ import 'dart:async';
 
 const lazy = const DeferredLibrary('deferred_function_library');
 
-isNoSuchMethodError(e) => e is NoSuchMethodError;
+isError(e) => e is Error;
 
 readFoo() {
   // TODO(ahe): There is a problem with type inference of deferred
@@ -24,8 +24,8 @@ readFoo() {
 }
 
 main() {
-  Expect.throws(() { lib.foo('a'); }, isNoSuchMethodError);
-  Expect.throws(readFoo, isNoSuchMethodError);
+  Expect.throws(() { lib.foo('a'); }, isError);
+  Expect.throws(readFoo, isError);
   int counter = 0;
   asyncStart();
   lazy.load().then((bool didLoad) {
@@ -47,6 +47,6 @@ main() {
     asyncEnd();
   });
   Expect.equals(0, counter);
-  Expect.throws(() { lib.foo('a'); }, isNoSuchMethodError);
-  Expect.throws(readFoo, isNoSuchMethodError);
+  Expect.throws(() { lib.foo('a'); }, isError);
+  Expect.throws(readFoo, isError);
 }