feat(bench press): use chrome tracing protocol and initial iOS support

modules/angular2/src/facade/collection.dart

@@ -138,6 +138,9 @@ class ListWrapper {
   static List slice(List l, int from, int to) {
     return l.sublist(from, to);
   }
+  static void sort(List l, compareFn(a,b)) {
+    l.sort(compareFn);
+  }
 }
 
 bool isListLikeIterable(obj) => obj is Iterable;

modules/angular2/src/facade/collection.es6

@@ -185,6 +185,10 @@ export class ListWrapper {
   static slice(l:List, from:int, to:int):List {
     return l.slice(from, to);
   }
+  static sort(l:List, compareFn:Function) {
+    l.sort(compareFn);
+    return l;
+  }
 }
 
 export function isListLikeIterable(obj):boolean {