Fix ssl_session_cache_openssl.cc hash function.

Fix ssl_session_cache_openssl.cc hash function.

That's not a polynomial hash. Match base/strings/string_piece.h's hash.

BUG=none

Committed: https://crrev.com/0204a6fc0652d1e1e02387a5c7770711624e1b2e
Cr-Commit-Position: refs/heads/master@{#300165}

[davidben, 2014-10-01 23:12:37]

davidben@chromium.org changed reviewers:
+ rsleevi@chromium.org

[davidben, 2014-10-01 23:12:37]

Still fighting with C++ rvalue reference hash_map template goo, but here's
something I noticed on the way...

[davidben, 2014-10-13 18:05:47]

friendly ping

[Ryan Sleevi, 2014-10-17 20:43:24]

lgtm

[davidben, 2014-10-17 21:20:04]

The CQ bit was checked by davidben@chromium.org

[commit-bot: I haz the power, 2014-10-17 21:21:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/604363003/1

[commit-bot: I haz the power, 2014-10-17 21:29:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-17 21:30:11]

Patchset 1 (id:??) landed as
https://crrev.com/0204a6fc0652d1e1e02387a5c7770711624e1b2e
Cr-Commit-Position: refs/heads/master@{#300165}