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

remoting/host/setup/gaia_oauth_client.h

 // Copyright 2013 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_HOST_SETUP_GAIA_OAUTH_CLIENT_H_
 #define REMOTING_HOST_SETUP_GAIA_OAUTH_CLIENT_H_
 
 #include <queue>
 
 #include "base/macros.h"
@@ skipping 42 matching lines @@
 
   void OnOAuthError() override;
   void OnNetworkError(int response_code) override;
 
  private:
   struct Request {
     Request(const gaia::OAuthClientInfo& oauth_client_info,
             const std::string& auth_code,
             bool need_user_email,
             CompletionCallback on_done);
+    Request(const Request& other);
     virtual ~Request();
     gaia::OAuthClientInfo oauth_client_info;
     std::string auth_code;
     bool need_user_email;
     CompletionCallback on_done;
   };
 
   void SendResponse(const std::string& user_email,
                     const std::string& refresh_token);
 
   std::queue<Request> pending_requests_;
   gaia::GaiaOAuthClient gaia_oauth_client_;
   std::string refresh_token_;
   bool need_user_email_;
   CompletionCallback on_done_;
 
   DISALLOW_COPY_AND_ASSIGN(GaiaOAuthClient);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SETUP_GAIA_OAUTH_CLIENT_H_