Incremental compilation of new classes with fields.

dart/tests/try/web/incremental_compilation_update_test.dart

Index: dart/tests/try/web/incremental_compilation_update_test.dart
diff --git a/dart/tests/try/web/incremental_compilation_update_test.dart b/dart/tests/try/web/incremental_compilation_update_test.dart
index ffea918265210b7fc40e6a5fa083958de8a93060..e31e86b4c77d085fcfaf2f59ace276f5b11276de 100644
--- a/dart/tests/try/web/incremental_compilation_update_test.dart
+++ b/dart/tests/try/web/incremental_compilation_update_test.dart
@@ -536,6 +536,49 @@ main() {
 """,
             const <String>['Called B.m']),
     ],
+
+    // Test that fields of a newly instantiated class are handled.
+    const <ProgramResult>[
+        const ProgramResult(
+            r"""
+class A {
+  var x;
+  A(this.x);
+}
+var instance;
+foo() {
+  if (instance != null) {
+    print(instance.x);
+  } else {
+    print('v1');
+  }
+}
+main() {
+  foo();
+}
+""",
+            const <String>['v1']),
+        const ProgramResult(
+            r"""
+class A {
+  var x;
+  A(this.x);
+}
+var instance;
+foo() {
+  if (instance != null) {
+    print(instance.x);
+  } else {
+    print('v1');
+  }
+}
+main() {
+  instance = new A('v2');
+  foo();
+}
+""",
+            const <String>['v2']),
+    ],
 ];
 
 void main() {