GitLab

Moving the backend & frontend code to their own folders. This CL contains no
functional changes.

Bug: 830931
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: Ia6147c93063214143c8de29ca945cc3df8892bfa
Reviewed-on: https://chromium-review.googlesource.com/1023114Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#552896}