Collect closure functions in isolate

runtime/observatory/tests/service/coverage_test.dart

Index: runtime/observatory/tests/service/coverage_test.dart
diff --git a/runtime/observatory/tests/service/coverage_test.dart b/runtime/observatory/tests/service/coverage_test.dart
index 5223092af4ba30c52d5a7cf4980191094bf82a6c..b558c4642e1a1b26f1ca9afef07d3f086d8109c3 100644
--- a/runtime/observatory/tests/service/coverage_test.dart
+++ b/runtime/observatory/tests/service/coverage_test.dart
@@ -75,7 +75,7 @@ hasStoppedAtBreakpoint,
   coverage = await isolate.invokeRpcNoUpgrade('_getCoverage',
                                               { 'targetId': lib.id });
   expect(coverage['type'], equals('CodeCoverage'));
-  expect(coverage['coverage'].length, equals(3));
+  expect(coverage['coverage'].length, equals(4));
   expect(coverage['coverage'][0]['hits'],
          equals([15, 1, 16, 0, 18, 1, 20, 1,
                  24, 1, 25, 1, 27, 0]));
@@ -87,7 +87,7 @@ hasStoppedAtBreakpoint,
   coverage = await isolate.invokeRpcNoUpgrade('_getCoverage',
                                        { 'targetId': cls.location.script.id });
   expect(coverage['type'], equals('CodeCoverage'));
-  expect(coverage['coverage'].length, equals(3));
+  expect(coverage['coverage'].length, equals(4));
   expect(coverage['coverage'][0]['hits'],
          equals([15, 1, 16, 0, 18, 1, 20, 1,
                  24, 1, 25, 1, 27, 0]));