Close idle H2 sockets when SpdySession is initialized.

net/socket/ssl_client_socket_pool.cc

Index: net/socket/ssl_client_socket_pool.cc
diff --git a/net/socket/ssl_client_socket_pool.cc b/net/socket/ssl_client_socket_pool.cc
index d98f6b005428acb9d5562a1226c3a272f5d57d68..359fab3da15d86980fa8bda7c74344bade927122 100644
--- a/net/socket/ssl_client_socket_pool.cc
+++ b/net/socket/ssl_client_socket_pool.cc
@@ -600,6 +600,11 @@ void SSLClientSocketPool::CloseIdleSockets() {
   base_.CloseIdleSockets();
 }
 
+void SSLClientSocketPool::CloseIdleSocketsInGroup(
+    const std::string& group_name) {
+  base_.CloseIdleSocketsInGroup(group_name);
+}
+
 int SSLClientSocketPool::IdleSocketCount() const {
   return base_.idle_socket_count();
 }