Arguments swapped in IndexError constructor.

Amazingly only caught by dart2js.

R=floitsch@google.com

Review URL: https://codereview.chromium.org//713243002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41660 260f80e4-7a28-3924-810f-c04153c831b5
There are NativeTypedData classes that aren't lists and have no "length".

Review URL: https://codereview.chromium.org//714873002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41661 260f80e4-7a28-3924-810f-c04153c831b5
Revert "Working insertion of hash values; added a few labels in spec"

This reverts commit r41658.

Review URL: https://codereview.chromium.org//714883002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41662 260f80e4-7a28-3924-810f-c04153c831b5