Add support for closure calls through getters.

tests/lib/mirrors/invoke_closurization_test.dart

Index: tests/lib/mirrors/invoke_closurization_test.dart
diff --git a/tests/lib/mirrors/invoke_closurization_test.dart b/tests/lib/mirrors/invoke_closurization_test.dart
index 0b25ff0193936647f70fcc80e4f9aa88fd2ae52b..4afaabee6125f1e6a3f4139862b25b9e9ee3bf38 100644
--- a/tests/lib/mirrors/invoke_closurization_test.dart
+++ b/tests/lib/mirrors/invoke_closurization_test.dart
@@ -24,14 +24,14 @@ testSync() {
   Expect.equals("A+B+C", result.reflectee('A', 'B', 'C'));
 
   ClassMirror cm = reflectClass(C);
-  result = cm.getField(#staticFunction);                             /// static: ok
-  Expect.isTrue(result.reflectee is Function, "Should be closure");  /// static: continued
-  Expect.equals("A-B-C", result.reflectee('A', 'B', 'C'));           /// static: continued
+  result = cm.getField(#staticFunction);
+  Expect.isTrue(result.reflectee is Function, "Should be closure");
+  Expect.equals("A-B-C", result.reflectee('A', 'B', 'C'));
 
   LibraryMirror lm = cm.owner;
-  result = lm.getField(#libraryFunction);                            /// static: continued
-  Expect.isTrue(result.reflectee is Function, "Should be closure");  /// static: continued
-  Expect.equals("A:B:C", result.reflectee('A', 'B', 'C'));           /// static: continued
+  result = lm.getField(#libraryFunction);
+  Expect.isTrue(result.reflectee is Function, "Should be closure");
+  Expect.equals("A:B:C", result.reflectee('A', 'B', 'C'));
 }
 
 main() {