Manually revert "Fold out-of-flow objects into anonymous blocks when removing children"

Manually revert "Fold out-of-flow objects into anonymous blocks when removing children"

Also revert "Auto-rebaseline for r357886"

First attempt at reverting failed: https://codereview.chromium.org/1419053004/

Reason for revert:
Causing use-after-free crashes in entire rendering pipeline, reverting.

Original issue's description:
> Fold out-of-flow objects into anonymous blocks when removing children
>
> Sometimes when we remove a child we end up with a float or out-of-flow object beside
> an anonymous block. When that happens, fold the float/out-of-flow object into the
> anonymous box as that is where it would have lived if they were siblings in the
> first place.
>
> BUG=322039
>
> Committed: https://crrev.com/44402d152cd0bb788db3136ab08c3c76ec348cd1
> Cr-Commit-Position: refs/heads/master@{#357886}

TBR=robhogan@gmail.com
BUG=322039
Committed: https://crrev.com/053b27991fc41af984d18d83f20dcba4e2cecb59
Cr-Commit-Position: refs/heads/master@{#358293}

[mstensho (USE GERRIT), 2015-11-06 08:33:53]

The CQ bit was checked by mstensho@opera.com

[commit-bot: I haz the power, 2015-11-06 08:34:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1411543009/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1411543009/1

[commit-bot: I haz the power, 2015-11-06 09:53:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-06 09:54:20]

Patchset 1 (id:??) landed as
https://crrev.com/053b27991fc41af984d18d83f20dcba4e2cecb59
Cr-Commit-Position: refs/heads/master@{#358293}

[mstensho (USE GERRIT), 2015-11-06 09:58:35]

Better mention bug 551916 here, which is about the regression.

Should have been in the BUG line in the description, but I just copied the text
from the other CL, and failed to notice that it was missing.