Revert of Improve OriginAccessEntry support for IP addresses.

Revert of Improve OriginAccessEntry support for IP addresses. (patchset #3 id:40001 of https://codereview.chromium.org/1128913004/)

Reason for revert:
ASAN and ClusterFuzz do not like this patch.

BUG=488783
Original issue's description:
> Improve OriginAccessEntry support for IP addresses.
> 
> The current IP address check in OriginAccessEntry is hardly robust; it
> just verifies that the last character in the given host is a digit. This
> patch brings in the processing from GURL::HostIsIPAddress, and adds a
> number of tests to verify the behavior.
> 
> It also notes clearly that the 'TreatIPAddressAsDomain' should never be
> used outside of 'document.domain' layout tests, and even there we should
> get rid of it ASAP.
> 
> BUG=477578
> R=jochen@chromium.org, rsleevi@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=195410

TBR=jochen@chromium.org,rsleevi@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=477578
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=195435

[Mike West, 2015-05-16 04:59:01]

Created Revert of Improve OriginAccessEntry support for IP addresses.

[commit-bot: I haz the power, 2015-05-16 04:59:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1135493005/1

[commit-bot: I haz the power, 2015-05-16 04:59:28]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=195435