Migrate touch_replay.cc to use base::span overloads of File::Read.

No functionality change.

Bug: 435317390
Change-Id: I6c6f1498ce838c2fa421b3e932b7439927ec1a10
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7227988
Auto-Submit: Jan Keitel <jkeitel@google.com>
Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1566395}
NOKEYCHECK=True
GitOrigin-RevId: aafb99554506aef43aa389c00d043f31761a3b70