Close idle H2 sockets when SpdySession is initialized.

net/socket/transport_client_socket_pool.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.
 
 #ifndef NET_SOCKET_TRANSPORT_CLIENT_SOCKET_POOL_H_
 #define NET_SOCKET_TRANSPORT_CLIENT_SOCKET_POOL_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 207 matching lines @@
                    ClientSocketHandle* handle,
                    RequestPriority priority) override;
 
   void CancelRequest(const std::string& group_name,
                      ClientSocketHandle* handle) override;
   void ReleaseSocket(const std::string& group_name,
                      std::unique_ptr<StreamSocket> socket,
                      int id) override;
   void FlushWithError(int error) override;
   void CloseIdleSockets() override;
+  void CloseIdleSocketsInGroup(const std::string& group_name) override;
   int IdleSocketCount() const override;
   int IdleSocketCountInGroup(const std::string& group_name) const override;
   LoadState GetLoadState(const std::string& group_name,
                          const ClientSocketHandle* handle) const override;
   std::unique_ptr<base::DictionaryValue> GetInfoAsValue(
       const std::string& name,
       const std::string& type,
       bool include_nested_pools) const override;
   base::TimeDelta ConnectionTimeout() const override;
 
@@ skipping 46 matching lines @@
   };
 
   PoolBase base_;
 
   DISALLOW_COPY_AND_ASSIGN(TransportClientSocketPool);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_TRANSPORT_CLIENT_SOCKET_POOL_H_