update: sdk 17328
fix loops (fruitsearch) example

Iterable.filter() renamed Iterable.where().

http://news.dartlang.org/2013/01/first-look-at-new-dart-libraries.html

dart-lang/web-ui@4192747
https://chromiumcodereview.appspot.com/11855002/diff/22001/example/explainer/fruitsearch.html