DevTools: Add "stray" source files to their respective modules in compile_frontend.py

R=aandrey, pfeldman, vsevik
NOTRY=true

Review URL: https://codereview.chromium.org/96933002

git-svn-id: svn://svn.chromium.org/blink/trunk@162963 bbb929c8-8fbe-4397-9dbb-9b2b20218538