tree cf025b3db0a5b92671757bc36b7ecd02326f7688
parent fd3e989c988cef37fab3d6b561f6d7f93c63a3f5
author Adam Barth <abarth@chromium.org> 1440538349 -0700
committer Adam Barth <abarth@chromium.org> 1440539118 -0700

Fix global key error while using fitness app

We were making local copies of the listener maps, but we were actually
iterating the underlying sets. Now we make local copies of the sets.

Fixes #803