Revert of Refactor the treatment of shape-outside objects in float overlapping checks

Revert of Refactor the treatment of shape-outside objects in float overlapping checks (patchset #1 id:1 of https://codereview.chromium.org/1242253002/)

Reason for revert:
We're seeing timeouts on The Android perf bots: https://crbug.com/514790#c24

Original issue's description:
> Refactor the treatment of shape-outside objects in float overlapping checks
> 
> Integrate shape-outside into the red-black tree used for checking whether an
> object overlaps with a float.
> 
> This merges WebKit CL http://trac.webkit.org/changeset/158954
> 
> BUG=510872
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=199519

TBR=wangxianzhu@google.com,wangxianzhu@chromium.org,robhogan@gmail.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=510872
Committed: https://crrev.com/b62dc5eafc96145f3169c2071cf64be2da73f61e
git-svn-id: svn://svn.chromium.org/blink/trunk@199689 bbb929c8-8fbe-4397-9dbb-9b2b20218538

[dtu, 2015-07-30 00:06:48]

Created Revert of Refactor the treatment of shape-outside objects in float
overlapping checks

[commit-bot: I haz the power, 2015-07-30 00:07:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1263923002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1263923002/1

[commit-bot: I haz the power, 2015-07-30 00:08:22]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=199689

[commit-bot: I haz the power, 2015-09-23 11:54:36]

Patchset 1 (id:??) landed as
https://crrev.com/b62dc5eafc96145f3169c2071cf64be2da73f61e