Ensure that the browser’s copy of page id is in sync with the renderer’s.

Ensure that the browser’s copy of page id is in sync with the renderer’s.

This might-maybe-hope-not crash, and so has debugging statements.

BUG=407376
TEST=no crashing, we hope

Committed: https://crrev.com/b49b70f26e6d0f2f54bb87cf374f30a339c7d7c6
Cr-Commit-Position: refs/heads/master@{#299822}

[Avi (use Gerrit), 2014-10-15 22:30:11]

avi@chromium.org changed reviewers:
+ creis@chromium.org, rsesek@chromium.org

[Avi (use Gerrit), 2014-10-15 22:30:12]

You know the drill.

[Robert Sesek, 2014-10-15 22:31:21]

LGTM. I do not envy you, having to work on this bug.

[Charlie Reis, 2014-10-15 22:35:32]

LGTM.  Let's hope https://codereview.chromium.org/659843002/ fixed the
underlying bug!

[Avi (use Gerrit), 2014-10-15 22:37:47]

The CQ bit was checked by avi@chromium.org

[commit-bot: I haz the power, 2014-10-15 22:39:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/657233002/1

[commit-bot: I haz the power, 2014-10-16 02:25:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-16 02:26:17]

Patchset 1 (id:??) landed as
https://crrev.com/b49b70f26e6d0f2f54bb87cf374f30a339c7d7c6
Cr-Commit-Position: refs/heads/master@{#299822}

[Avi (use Gerrit), 2014-10-16 18:56:13]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/661823002/ by avi@chromium.org.

The reason for reverting is: It's crashing... drat..