Revert of Revert "net: enable SSL_MODE_CBC_RECORD_SPLITTING with OpenSSL."

Revert of Revert "net: enable SSL_MODE_CBC_RECORD_SPLITTING with OpenSSL." (patchset #1 id:1 of https://codereview.chromium.org/547843002/)

Reason for revert:
Doesn't look like this helped with the perf regression, so undoing the original revert.

Original issue's description:
> Revert "net: enable SSL_MODE_CBC_RECORD_SPLITTING with OpenSSL."
> 
> This reverts commit e06bd13395c1ed5d93dd35ff3572a79f08bfbab8.
> 
> This is a preemptive revert to see whether a pagecycler regression can
> be attributed to this change. (Even if it can, we still probably want to
> make the change, but it's good to know.)
> 
> BUG=409214
> TBR=davidben@chromium.org
> 
> Committed: https://chromium.googlesource.com/chromium/src/+/5fee53e7fe9a5a0f6aeb568446d8cdee5e3a96b7

TBR=davidben@chromium.org,agl@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=409214
Committed: https://crrev.com/e5c05e1e9ccd4dd510ad3d15adafce17bd38e8c2
Cr-Commit-Position: refs/heads/master@{#294001}

[Ilya Sherman, 2014-09-09 20:11:11]

Created Revert of Revert "net: enable SSL_MODE_CBC_RECORD_SPLITTING with
OpenSSL."

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

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/isherman@chromium.org/559663003/1

[commit-bot: I haz the power, 2014-09-09 20:34:40]

Committed patchset #1 (id:1) as 0c4f96ec2e01040beb600de4db33a254d3f90afc

[commit-bot: I haz the power, 2014-09-10 03:55:20]

Patchset 1 (id:??) landed as
https://crrev.com/e5c05e1e9ccd4dd510ad3d15adafce17bd38e8c2
Cr-Commit-Position: refs/heads/master@{#294001}