Simplify the interface to ProxyClientSocket::BuildTunnelRequest

Simplify the interface to ProxyClientSocket::BuildTunnelRequest
to only take the user-agent instead of a full HttpRequestInfo object.

This also changes the host header being sent in CONNECT requests
to include the port if it is 80, to match the behavior of the spec:

https://www.ietf.org/rfc/rfc2817.txt

Remove unused url argument to LogBlockedTunnelResponse

Committed: https://crrev.com/cb934f563776e71df0e523f783496722acc99546
Cr-Commit-Position: refs/heads/master@{#324054}

[Ryan Hamilton, 2015-04-04 15:24:06]

rch@chromium.org changed reviewers:
+ rtenneti@chromium.org

[Ryan Hamilton, 2015-04-04 15:24:06]

I'm going to clean up part of the client socket pool interface to remove the
request URL. This cleanup is several layers deep in that project.

[Ryan Hamilton, 2015-04-04 15:32:33]

bnc: FYI. This is part of an attempt to remove alternative_service_url_ in
HttpStreamFactoryImpl::Job

[ramant (doing other things), 2015-04-05 16:29:36]

lgtm

[Ryan Hamilton, 2015-04-05 16:31:21]

The CQ bit was checked by rch@chromium.org

[commit-bot: I haz the power, 2015-04-05 16:31:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1063563002/20001

[commit-bot: I haz the power, 2015-04-05 17:44:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-04-05 17:44:03]

Try jobs failed on following builders:
  linux_chromium_chromeos_ozone_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Ryan Hamilton, 2015-04-06 02:25:29]

rch@chromium.org changed reviewers:
+ sergeyu@chromium.org

[Ryan Hamilton, 2015-04-06 02:25:29]

sergeyu: Can you approve the change to
jingle/glue/proxy_resolving_client_socket_unittest.cc

[Sergey Ulanov, 2015-04-06 17:58:46]

lgtm

[Ryan Hamilton, 2015-04-06 18:11:49]

The CQ bit was checked by rch@chromium.org

[Ryan Hamilton, 2015-04-06 18:11:49]

The patchset sent to the CQ was uploaded after l-g-t-m from
rtenneti@chromium.org
Link to the patchset: https://codereview.chromium.org/1063563002/#ps40001
(title: "fix a jingle test")

[commit-bot: I haz the power, 2015-04-06 18:12:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1063563002/40001

[commit-bot: I haz the power, 2015-04-06 19:28:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-04-06 19:28:22]

Try jobs failed on following builders:
  linux_chromium_chromeos_ozone_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Ryan Hamilton, 2015-04-07 15:05:13]

The CQ bit was checked by rch@chromium.org

[Ryan Hamilton, 2015-04-07 15:05:13]

The patchset sent to the CQ was uploaded after l-g-t-m from
sergeyu@chromium.org, rtenneti@chromium.org
Link to the patchset: https://codereview.chromium.org/1063563002/#ps60001
(title: "Fix WebSocketStreamCreateTest.HandleErrTunnelConnectionFailed")

[commit-bot: I haz the power, 2015-04-07 15:06:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1063563002/60001

[commit-bot: I haz the power, 2015-04-07 16:25:22]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-04-07 16:27:25]

Patchset 4 (id:??) landed as
https://crrev.com/cb934f563776e71df0e523f783496722acc99546
Cr-Commit-Position: refs/heads/master@{#324054}