[GCM] Add connection factory for creating MCS connections

net/socket/client_socket_pool_manager.h

 // Copyright (c) 2012 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.
 //
 // ClientSocketPoolManager manages access to all ClientSocketPools.  It's a
 // simple container for all of them.  Most importantly, it handles the lifetime
 // and destruction order properly.
 
 #ifndef NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_H_
 #define NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_H_
@@ skipping 71 matching lines @@
   virtual base::Value* SocketPoolInfoToValue() const = 0;
 };
 
 // A helper method that uses the passed in proxy information to initialize a
 // ClientSocketHandle with the relevant socket pool. Use this method for
 // HTTP/HTTPS requests. |ssl_config_for_origin| is only used if the request
 // uses SSL and |ssl_config_for_proxy| is used if the proxy server is HTTPS.
 // |resolution_callback| will be invoked after the the hostname is
 // resolved.  If |resolution_callback| does not return OK, then the
 // connection will be aborted with that value.
-int InitSocketHandleForHttpRequest(
+NET_EXPORT int InitSocketHandleForHttpRequest(
     const GURL& request_url,
     const HttpRequestHeaders& request_extra_headers,
     int request_load_flags,
     RequestPriority request_priority,
     HttpNetworkSession* session,
     const ProxyInfo& proxy_info,
     bool force_spdy_over_ssl,
     bool want_spdy_over_npn,
     const SSLConfig& ssl_config_for_origin,
     const SSLConfig& ssl_config_for_proxy,
@@ skipping 57 matching lines @@
     bool want_spdy_over_npn,
     const SSLConfig& ssl_config_for_origin,
     const SSLConfig& ssl_config_for_proxy,
     PrivacyMode privacy_mode,
     const BoundNetLog& net_log,
     int num_preconnect_streams);
 
 }  // namespace net
 
 #endif  // NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_H_