Tell renderer which subframes have history items on back/forward.

Tell renderer which subframes have history items on back/forward.

This avoids making an IPC trip to the browser process for frames
that will not find a history item there.

BUG=649345, 639842
TEST=See bug for repro steps.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2380943002
Cr-Commit-Position: refs/heads/master@{#421972}
(cherry picked from commit c8ca51e469c96ab4a3e1b0cd9772687077b38984)

Committed: https://chromium.googlesource.com/chromium/src/+/1c99ce14a59e2bc3fc9da83684748315ad5e2023

[Charlie Reis, 2016-09-30 23:17:10]

creis@chromium.org changed reviewers:
+ alexmos@chromium.org, dcheng@chromium.org

[Charlie Reis, 2016-09-30 23:17:10]

FYI: Merging to M54.  (I've compiled and tested locally.)

[Charlie Reis, 2016-10-01 02:55:50]

Description was changed from

==========
Tell renderer which subframes have history items on back/forward.

This avoids making an IPC trip to the browser process for frames
that will not find a history item there.

BUG=649345, 639842
TEST=See bug for repro steps.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2380943002
Cr-Commit-Position: refs/heads/master@{#421972}
(cherry picked from commit c8ca51e469c96ab4a3e1b0cd9772687077b38984)
==========

to

==========
Tell renderer which subframes have history items on back/forward.

This avoids making an IPC trip to the browser process for frames
that will not find a history item there.

BUG=649345, 639842
TEST=See bug for repro steps.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2380943002
Cr-Commit-Position: refs/heads/master@{#421972}
(cherry picked from commit c8ca51e469c96ab4a3e1b0cd9772687077b38984)

Committed:
https://chromium.googlesource.com/chromium/src/+/1c99ce14a59e2bc3fc9da8368474...
==========

[Charlie Reis, 2016-10-01 02:55:51]

Committed patchset #1 (id:1) manually as
1c99ce14a59e2bc3fc9da83684748315ad5e2023.

[dcheng, 2016-10-01 03:24:16]

lgtm