Manual raw_ptr rewrite: //media

Bug: 1446392
Change-Id: Iad0ced003db243c554a27fece0b3917fcf3280e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4565093


Auto-Submit: Ho Cheung <uioptt24@gmail.com>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1149238}