Update HistoryController::current_entry_ on all main frame back/forwards.

Update HistoryController::current_entry_ on all main frame back/forwards.

This fixes a case where it was left stale on a cross-origin commit
because the provisional_entry_ had been cleared by a different commit.

BUG=623319
TEST=See bug comment 14 for repro steps.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2134493002
Cr-Commit-Position: refs/heads/master@{#404537}
(cherry picked from commit ab22bdfc5cb681f2f4dc789171e97618a9657486)

Committed: https://chromium.googlesource.com/chromium/src/+/117fc6cce4a3fd99f22a7351b19e094b6e64cba1

[Charlie Reis, 2016-07-14 20:42:59]

Description was changed from

==========
Update HistoryController::current_entry_ on all main frame back/forwards.

This fixes a case where it was left stale on a cross-origin commit
because the provisional_entry_ had been cleared by a different commit.

BUG=623319
TEST=See bug comment 14 for repro steps.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2134493002
Cr-Commit-Position: refs/heads/master@{#404537}
(cherry picked from commit ab22bdfc5cb681f2f4dc789171e97618a9657486)
==========

to

==========
Update HistoryController::current_entry_ on all main frame back/forwards.

This fixes a case where it was left stale on a cross-origin commit
because the provisional_entry_ had been cleared by a different commit.

BUG=623319
TEST=See bug comment 14 for repro steps.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2134493002
Cr-Commit-Position: refs/heads/master@{#404537}
(cherry picked from commit ab22bdfc5cb681f2f4dc789171e97618a9657486)

Committed:
https://chromium.googlesource.com/chromium/src/+/117fc6cce4a3fd99f22a7351b19e...
==========

[Charlie Reis, 2016-07-14 20:43:00]

Committed patchset #1 (id:1) manually as
117fc6cce4a3fd99f22a7351b19e094b6e64cba1.