Make the stack_trace package print relative URLs for browser paths.

Prior to this, only console paths were printed as relative.

R=rnystrom@google.com
BUG=

Review URL: https://codereview.chromium.org//75543013

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/stack_trace@30484 260f80e4-7a28-3924-810f-c04153c831b5
3 files changed
tree: 030f9fed61d29ea4ec60296d4e2c0f3c01b55dfb
  1. pkgs/