Use scoped_ptr<> to pass ownership in more places.

remoting/host/chromoting_host.cc

Index: remoting/host/chromoting_host.cc
diff --git a/remoting/host/chromoting_host.cc b/remoting/host/chromoting_host.cc
index ab3478aa3f56333fd84190b3c792211577918f24..26871271e1c48ab090d44028134bd21188f38b06 100644
--- a/remoting/host/chromoting_host.cc
+++ b/remoting/host/chromoting_host.cc
@@ -261,10 +261,10 @@ void ChromotingHost::OnIncomingSession(
   LOG(INFO) << "Client connected: " << session->jid();
 
   // Create a client object.
-  protocol::ConnectionToClient* connection =
-      new protocol::ConnectionToClient(session);
+  scoped_ptr<protocol::ConnectionToClient> connection(
+      new protocol::ConnectionToClient(session));
   ClientSession* client = new ClientSession(
-      this, connection, desktop_environment_->event_executor(),
+      this, connection.Pass(), desktop_environment_->event_executor(),
       desktop_environment_->capturer());
   clients_.push_back(client);
 }