DevTools: [Profiler] Extract ProfileTypeRegistry from ProfilesPanel.js

This is required for the new script loader that does not allow importScript()

BUG=391566
R=yurys

Review URL: https://codereview.chromium.org/442663004

git-svn-id: svn://svn.chromium.org/blink/trunk@179532 bbb929c8-8fbe-4397-9dbb-9b2b20218538