vt: Fire pagereveal on BFCache restore in iframe
Also add a test for pagereveal in an ordinary navigation in an iframe
since this is lacking coverage.
Fixed: 327187221
Change-Id: I1349cc1144f3a5d7e7d166a662606629d4c0db49
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5525858
Reviewed-by: Khushal Sagar khushalsagar@chromium.org
Commit-Queue: David Bokan bokan@chromium.org
Cr-Commit-Position: refs/heads/main@{#1298843}