Update replace-internal-references to accept multiple folders
Update replace-internal-references to accept multiple folders

This allows us to specify multiple folders at the same time, doing only
1 pass per folder.

Bug: 1006759
Change-Id: I522249c3490f36c7d856a56c992d0393cc9738e4
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2018945
Auto-Submit: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Commit-Queue: Paul Lewis <8915f5d5c39a08c5a3e8a8d7314756e4580816f9@chromium.org>
Reviewed-by: Paul Lewis <8915f5d5c39a08c5a3e8a8d7314756e4580816f9@chromium.org>

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