b373e6c423
Rename the 'preview' property to 'valueAsString'. Rework printing so that we only add 'valueAsString' when we need it (num, String, etc.). Change ToUserCString to be a String-only method. Drop ToUserCString for lists -- it was hokey and unused. Max string length is now 1024 instead of 40. Update tests. BUG= R=johnmccutchan@google.com Review URL: https://codereview.chromium.org//219333011 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@34612 260f80e4-7a28-3924-810f-c04153c831b5