Revert of Use standard ICE in Chromoting. (patchset #7 id:160001 of https://codereview.chromium.org/1085703003/)

Reason for revert:
This change did cause test failure: http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20Mac%20%28valgrind%29%282%29/builds/34169/ (the link in the first revert was incorrect)

Original issue's description:
> Use standard ICE in Chromoting.
>
> Previously we were using legacy, non-standard version of ICE. This
> change adds ICE version negotiation and enabled standard ICE by default,
> when both peers support it.
>
> BUG=473758
>
> Committed: https://crrev.com/5a5854ee3e1c5760b422f26d31909bfb5dca631f
> Cr-Commit-Position: refs/heads/master@{#326560}

TBR=rmsousa@chromium.org,wez@chromium.org,dcaiafa@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=473758

Review URL: https://codereview.chromium.org/1089253005

Cr-Commit-Position: refs/heads/master@{#326570}

1 files changed, 3 insertions, 5 deletions

diff --git a/remoting/host/chromoting_host.cc b/remoting/host/chromoting_host.cc
index 57f0f9b..346e887 100644
--- a/remoting/host/chromoting_host.cc
+++ b/remoting/host/chromoting_host.cc
@@ -285,17 +285,15 @@ void ChromotingHost::OnIncomingSession(
     return;
   }
 
-  scoped_ptr<protocol::SessionConfig> config =
-      protocol::SessionConfig::SelectCommon(session->candidate_config(),
-                                            protocol_config_.get());
-  if (!config) {
+  protocol::SessionConfig config;
+  if (!protocol_config_->Select(session->candidate_config(), &config)) {
     LOG(WARNING) << "Rejecting connection from " << session->jid()
                  << " because no compatible configuration has been found.";
     *response = protocol::SessionManager::INCOMPATIBLE;
     return;
   }
 
-  session->set_config(config.Pass());
+  session->set_config(config);
 
   *response = protocol::SessionManager::ACCEPT;