GitLab

Use RenderFrameHost::IsInBackForwardCache, which was introduced by
https://chromium-review.googlesource.com/c/chromium/src/+/2073980
instead.

Bug: 1001087
Change-Id: I715eabc805610c6eff8b801ec9a60419582b7c24
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2091325
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#756608}