net: don't add padding extension for SSLv3.

This is a no-op change because our SSLv3 handshakes aren't long enough to
trigger the padding extension. But, if they were, the padding extension would
break them.

BUG=315828

Review URL: https://codereview.chromium.org/66553007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234619 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed