remoting: Add out-of-line copy ctors for complex classes.

remoting/signaling/xmpp_signal_strategy.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_
 #define REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_
 
 #include "remoting/signaling/signal_strategy.h"
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace net {
 class ClientSocketFactory;
 class URLRequestContextGetter;
 }  // namespace net
 
 namespace remoting {
 
 // XmppSignalStrategy implements SignalStrategy using direct XMPP connection.
 class XmppSignalStrategy : public SignalStrategy {
  public:
   // XMPP Server configuration for XmppSignalStrategy.
   struct XmppServerConfig {
     XmppServerConfig();
+    XmppServerConfig(const XmppServerConfig& other);
     ~XmppServerConfig();
 
     std::string host;
     int port;
     bool use_tls;
 
     std::string username;
     std::string auth_token;
   };
 
@@ skipping 24 matching lines @@
   class Core;
 
   scoped_ptr<Core> core_;
 
   DISALLOW_COPY_AND_ASSIGN(XmppSignalStrategy);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_