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 6c44c5eef881f90d20fd012b37e88b28abcc5a7e..f422a7679474b326bd14741c448819ed5c3cd306 100644
--- a/net/socket/ssl_client_socket_pool.cc
+++ b/net/socket/ssl_client_socket_pool.cc
@@ -606,6 +606,11 @@ 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();
 }