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

Revert of Ensure that the browser’s copy of page id is in sync with the renderer’s. (patchset #1 id:1 of https://codereview.chromium.org/795233002/)

Reason for revert:
Still crashing.

Original issue's description:
> 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
> TBR=rsesek@chromium.org
>
> Committed: https://crrev.com/0eba5c5e63e52330d3409193f5184aaffac45e90
> Cr-Commit-Position: refs/heads/master@{#308036}

TBR=rsesek@chromium.org,creis@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=407376
Committed: https://crrev.com/1e0433934a310e5066758720b06f86b41b7408c8
Cr-Commit-Position: refs/heads/master@{#308287}

[Avi (use Gerrit), 2014-12-13 20:32:25]

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

[commit-bot: I haz the power, 2014-12-13 20:33:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/803803003/1

[commit-bot: I haz the power, 2014-12-13 20:33:24]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-13 20:34:06]

Patchset 1 (id:??) landed as
https://crrev.com/1e0433934a310e5066758720b06f86b41b7408c8
Cr-Commit-Position: refs/heads/master@{#308287}