Use dart.tearoff helper at tearoff sites

lib/runtime/dart/_internal.js

 var _internal = dart.defineLibrary(_internal, {});
 var core = dart.import(core);
 var collection = dart.import(collection);
 var math = dart.lazyImport(math);
 var _interceptors = dart.lazyImport(_interceptors);
 var _js_primitives = dart.lazyImport(_js_primitives);
 (function(exports, core, collection, math, _interceptors, _js_primitives) {
   'use strict';
   class EfficientLength extends core.Object {}
   dart.setSignature(EfficientLength, {});
@@ skipping 1219 matching lines @@
       skipWhile(iterable, test) {
         dart.as(test, dart.functionType(core.bool, [dart.dynamic]));
         return new (SkipWhileIterable$(T))(dart.as(iterable, core.Iterable$(T)), dart.as(test, dart.functionType(core.bool, [T])));
       }
       reversedList(list) {
         return new (ReversedListIterable$(T))(dart.as(list, core.Iterable$(T)));
       }
       static sortList(list, compare) {
         dart.as(compare, dart.functionType(core.int, [dart.dynamic, dart.dynamic]));
         if (compare == null)
-          compare = dart.bind(core.Comparable, 'compare');
+          compare = core.Comparable.compare;
         Sort.sort(list, compare);
       }
       static shuffleList(list, random) {
         if (random == null)
           random = new math.Random();
         let length = list[core.$length];
         while (dart.notNull(length) > 1) {
           let pos = random.nextInt(length);
           length = dart.notNull(length) - 1;
           let tmp = list[core.$get](length);
@@ skipping 1056 matching lines @@
   exports.ReversedListIterable = ReversedListIterable;
   exports.UnmodifiableListError = UnmodifiableListError;
   exports.NonGrowableListError = NonGrowableListError;
   exports.makeListFixedLength = makeListFixedLength;
   exports.Lists = Lists;
   exports.printToConsole = printToConsole;
   exports.Sort = Sort;
   exports.Symbol = Symbol;
   exports.POWERS_OF_TEN = POWERS_OF_TEN;
 })(_internal, core, collection, math, _interceptors, _js_primitives);