a9fecab434
Using getRange to chop off the front of the list of char codes for each line read was to slow. Use an offset into the list instead and throw away the list when all char codes have been read. R=ager@google.com BUG= TEST= Review URL: http://codereview.chromium.org//8769039 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@2023 260f80e4-7a28-3924-810f-c04153c831b5