Revert of AppShell: pass command-line files to app as launch data (patchset #3 id:40001 of https://codereview.chromium.org/2824553002/ )

Reason for revert:
TBR was insufficient for commit

Original issue's description:
> AppShell: pass command-line files to app as launch data
>
> An app that registers file handlers can be passed filenames on the
> command line to use those files.
>
> BUG=679870
> TBR=benwells@chromium.org # DEPS
>
> Review-Url: https://codereview.chromium.org/2824553002
> Cr-Commit-Position: refs/heads/master@{#469827}
> Committed: https://chromium.googlesource.com/chromium/src/+/b7b29db1011a7b8e0e8816449e2209305402a46a

TBR=rkc@chromium.org,benwells@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=679870

Review-Url: https://codereview.chromium.org/2864603007
Cr-Commit-Position: refs/heads/master@{#469893}
4 files changed