Keep a copy of page id in RenderViewHost.

Keep a copy of page id in RenderViewHost.

This is an instrumented version of the patch that will be reverted in a few days. This is meant to catch crashes in edge cases and log enough for us to repro them.

BUG=407376
TEST=this may crash for a few people

Committed: https://crrev.com/45db74f875d668805afad8e73b7840e9df9c3215
Cr-Commit-Position: refs/heads/master@{#293229}

[Avi (use Gerrit), 2014-09-03 20:25:11]

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

[Avi (use Gerrit), 2014-09-03 20:25:12]

You've seen this before. Again, I'm doing a temporary commit to gather more data
as to what crashes are left.

[Robert Sesek, 2014-09-03 20:26:21]

Stampystamp LGTM

[Avi (use Gerrit), 2014-09-03 20:26:48]

The CQ bit was checked by avi@chromium.org

[commit-bot: I haz the power, 2014-09-03 20:30:14]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/avi@chromium.org/537703003/1

[commit-bot: I haz the power, 2014-09-04 00:09:18]

Committed patchset #1 (id:1) as f325b403581a6827427e8b0861d944cb9db3f0cc

[commit-bot: I haz the power, 2014-09-10 03:28:49]

Patchset 1 (id:??) landed as
https://crrev.com/45db74f875d668805afad8e73b7840e9df9c3215
Cr-Commit-Position: refs/heads/master@{#293229}