Reland "Remove children from HistoryNodes that redirect during back/forward navigation"

This reverts commit 4595779d7010edec31a2224acd2a3a71a2ad206e.

BUG=334598
TEST=http/tests/navigation/back-to-redirect-with-frame.html
R=abarth@chromium.org

Review URL: https://codereview.chromium.org/139103003

git-svn-id: svn://svn.chromium.org/blink/trunk@165535 bbb929c8-8fbe-4397-9dbb-9b2b20218538