GitLab

This CL reverts r420600 and r459047 - now that MD history and MD
settings have shipped long time ago, there is no need to reset PageState
to avoid mixups when restoring MD-disabled PageState into an MD-enabled
chrome://settings and vice-versa.  This aspect of the CL affects only
the following 3 URLs:
- chrome://history
- chrome://settings
- chrome://help

Bug: 614758, 700350, 976055
Change-Id: I782664d9940c25406f3cd4a226692b75de6bfc48
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1808089
Auto-Submit: Łukasz Anforowicz <lukasza@chromium.org>
Reviewed-by: Rachel Blum <groby@chromium.org>
Reviewed-by: Chris Hamilton <chrisha@chromium.org>
Reviewed-by: Charlie Reis <creis@chromium.org>
Commit-Queue: Chris Hamilton <chrisha@chromium.org>
Cr-Commit-Position: refs/heads/master@{#698623}