Fixes #460

tool/sdk_expected_errors.txt

Index: tool/sdk_expected_errors.txt
diff --git a/tool/sdk_expected_errors.txt b/tool/sdk_expected_errors.txt
index 972243b627a8c58eec03b08bc71cdd834e5be0c0..446a210779b478b8b51ba7a39f9af2c689a1e76d 100644
--- a/tool/sdk_expected_errors.txt
+++ b/tool/sdk_expected_errors.txt
@@ -253,10 +253,10 @@ warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from num to T (dart:math/re
 warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from num to T (dart:math/rectangle.dart, line 247, col 28)
 warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from num to T (dart:math/rectangle.dart, line 263, col 30)
 warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to List<String> (dart:_debugger, line 25, col 5)
-severe: [STATIC_TYPE_ERROR] Type check failed: _convertToJS ((dynamic) → dynamic) is not of type (E) → dynamic (dart:js, line 326, col 44)
-warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:js, line 359, col 12)
-warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:js, line 405, col 12)
-warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:js, line 410, col 12)
+severe: [STATIC_TYPE_ERROR] Type check failed: _convertToJS ((dynamic) → dynamic) is not of type (E) → dynamic (dart:js, line 327, col 44)
+warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:js, line 360, col 12)
+warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:js, line 406, col 12)
+warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:js, line 411, col 12)
 warning: [DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to List<Type> (dart:_js_mirrors, line 126, col 31)
 severe: [AnalyzerMessage] The setter 'href' is not defined for the class 'Element' (dart:html, line 172, col 25)
 severe: [AnalyzerMessage] The final variable 'origin' must be initialized (dart:html, line 180, col 3)