GitLab

Page in back-forward cache can be hidden too, so rename the methods to
avoid confusion.

R=csharrisson@chromium.org
BUG=1001087

Change-Id: I3e2a00ecbaf64275bc5cb46c8ab7662f5ad661cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2004367Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732731}