tree f4b16b3e9b9a05ed0b58223cc5f61cd4c8b6bdb3
parent 040a7ed7976c04d6b5c89f794c74ba3a054933ed
author Adam Barth <abarth@chromium.org> 1437490694 -0700
committer Adam Barth <abarth@chromium.org> 1437490694 -0700

Fix dart_pkg.py build crash

We need to work in absolute paths because os.path.exists("foo/..") is False but
os.mkdirs("foo/..") will generate an error.

R=johnmccutchan@google.com

Review URL: https://codereview.chromium.org/1242873003 .