This reverts commit 9b3c873bd5edd4e364ff8e2c05b96ee953d0a5a6.

Reason for revert: https://crbug.com/335171119

Original change's description:
> Filter files in the file picker for strict type conformance.
>
> Fixed: 41275486
> Change-Id: I77605e1b0727afdb1ba8e4c3dc54c7f3d89920b8
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5448139
> Reviewed-by: Leonard Grey <lgrey@chromium.org>
> Auto-Submit: Avi Drissman <avi@chromium.org>
> Commit-Queue: Avi Drissman <avi@chromium.org>
> Commit-Queue: Leonard Grey <lgrey@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1286553}

Change-Id: I2d7cbe4da4f13f578441d06a1e8d329a3c89996d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5457774
Reviewed-by: Prudhvikumar Bommana <pbommana@google.com>
Commit-Queue: Prudhvikumar Bommana <pbommana@google.com>
Owners-Override: Prudhvikumar Bommana <pbommana@google.com>
Cr-Commit-Position: refs/branch-heads/6420@{#9}
Cr-Branched-From: df576e0dad8b00dea2749a08f0849c518fa28949-refs/heads/main@{#1287100}