Instead of importing every <svg> in Polymer (including vulcanizing them into Downloads), we should only include those we actually use.
We can do this by creating a file with these SVGs (using https://poly-icon.appspot.com) and removing third_party/polymer/v1_0/components-chromium/iron-icons/* from polymer_resources.grdp.
It will be a minor pain to gather all the icons we use in all of our WebUI in one place, but after that, enforcing the removal of iron-icons/* will ensure we only include what we use going forward. I'll send an email to chromium-polymer with the details when we're ready.
Comment 1 by bugdroid1@chromium.org
, May 4 2016