Change our 'is int' check to use Math.floor instead of a smi check. Review URL: https://chromiumcodereview.appspot.com//10912147
Change our 'is int' check to use Math.floor instead of a smi check.
Review URL: https://chromiumcodereview.appspot.com//10912147

git-svn-id: a962b240025cf0577aa172e20f49ccb159ba6be1@12018 260f80e4-7a28-3924-810f-c04153c831b5

maxwellpeterson-wf/pub,dart-lang/pub,dart-lang/pub,computmaxer/pub,cjkao/dart-pub