Fixes for sunflower

test/generated_sdk/lib/_internal/compiler/js_lib/js_helper.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library _js_helper;
 
 import 'dart:_js_embedded_names' show
     ALL_CLASSES,
     GET_ISOLATE_TAG,
     INTERCEPTED_NAMES,
@@ skipping 571 matching lines @@
     return JS('int', '#', hash);
   }
 
   static _throwFormatException(String string) {
     throw new FormatException(string);
   }
 
   static int parseInt(String source,
                       int radix,
                       int handleError(String source)) {
-    if (handleError == null) handleError = _throwFormatException;
+    // TODO(vsm): Make _throwFormatException generic and use directly
+    // to avoid closure allocation.
+    if (handleError == null) handleError = (s) => _throwFormatException(s);
 
     checkString(source);
     var match = JS('JSExtendableArray|Null',
         r'/^\s*[+-]?((0x[a-f0-9]+)|(\d+)|([a-z0-9]+))\s*$/i.exec(#)',
         source);
     int digitsIndex = 1;
     int hexIndex = 2;
     int decimalIndex = 3;
     int nonDecimalHexIndex = 4;
     if (radix == null) {
@@ skipping 47 matching lines @@
           }
         }
       }
     }
     if (match == null) return handleError(source);
     return JS('num', r'parseInt(#, #)', source, radix);
   }
 
   static double parseDouble(String source, double handleError(String source)) {
     checkString(source);
-    if (handleError == null) handleError = _throwFormatException;
+    // TODO(vsm): Make _throwFormatException generic and use directly
+    // to avoid closure allocation.
+    if (handleError == null) handleError = (s) => _throwFormatException(s);
     // Notice that JS parseFloat accepts garbage at the end of the string.
     // Accept only:
     // - [+/-]NaN
     // - [+/-]Infinity
     // - a Dart double literal
     // We do allow leading or trailing whitespace.
     if (!JS('bool',
             r'/^\s*[+-]?(?:Infinity|NaN|'
                 r'(?:\.\d+|\d+(?:\.\d*)?)(?:[eE][+-]?\d+)?)\s*$/.test(#)',
             source)) {
@@ skipping 2784 matching lines @@
   throw new MainError("No top-level function named 'main'.");
 }
 
 void badMain() {
   throw new MainError("'main' is not a function.");
 }
 
 void mainHasTooManyParameters() {
   throw new MainError("'main' expects too many parameters.");
 }