Change pepper websocket port check to use EffectiveIntPort.

Change pepper websocket port check to use EffectiveIntPort.

This will attempt to convert unspecified ports (-1) to the default
at least, before checking. The check has gotten stricter and
now only allows ports between 0 and N, etc.

BUG=458443
TEST=manual for now (NaCl SDK websocket example) -- need to figure out how to get non-ephemeral test port

Committed: https://crrev.com/fed1369701b19b6acce2f4ec946f3c3e189beb55
Cr-Commit-Position: refs/heads/master@{#317146}

[jvoung (off chromium), 2015-02-19 18:57:33]

jvoung@chromium.org changed reviewers:
+ dmichael@chromium.org, toyoshim@chromium.org

[dmichael (off chromium), 2015-02-19 19:10:00]

lgtm, thanks for figuring this out!

[jvoung (off chromium), 2015-02-19 21:27:47]

The CQ bit was checked by jvoung@chromium.org

[commit-bot: I haz the power, 2015-02-19 21:28:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/938103002/1

[commit-bot: I haz the power, 2015-02-19 22:24:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-19 22:24:40]

Patchset 1 (id:??) landed as
https://crrev.com/fed1369701b19b6acce2f4ec946f3c3e189beb55
Cr-Commit-Position: refs/heads/master@{#317146}