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That's a heavy function to call.  I removed the call.

The only thing it was being used for apparently was to get the port.
Frankly, I don't see much importance in checking the port of
search engines, but I added port_ and a cached internal variable
to maintain this support and entirely removed the heavy call.

For reference, the port line was part of a large change
https://chromium.googlesource.com/chromium/src/+/5b30787532fe44ff67e29fbbedfb1781663a4f06%5E%21/#F8
for which there was no motivating discussion about the need to check
ports.  I guess there's no harm in it though.

BUG=

Review URL: https://codereview.chromium.org/1595103007

Cr-Commit-Position: refs/heads/master@{#371851}