[bfcache] Don't cache pages with an active media session.

[email protected]

Change-Id: If78de3f54944ae0aed101c7ca692bdbe5d2d308c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1827280
Commit-Queue: Lowell Manners <[email protected]>
Reviewed-by: Camille Lamy <[email protected]>
Reviewed-by: Alexander Timin <[email protected]>
Reviewed-by: Arthur Sonzogni <[email protected]>
Cr-Commit-Position: refs/heads/master@{#701531}
7 files changed