Add components/network_session_configurator.

components/network_session_configurator/network_session_configurator.h

Index: components/network_session_configurator/network_session_configurator.h
diff --git a/components/network_session_configurator/network_session_configurator.h b/components/network_session_configurator/network_session_configurator.h
new file mode 100644
index 0000000000000000000000000000000000000000..4af164810b15063ed188527c55314242928b6892
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+++ b/components/network_session_configurator/network_session_configurator.h
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+// Copyright 2016 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.
+
+// Helper functions to configure HttpNetworkSession::Params based on field
+// trials, policy, and command line.
+
+#ifndef COMPONENTS_NETWORK_SESSION_CONFIGURATOR_NETWORK_SESSION_CONFIGURATOR_H_
+#define COMPONENTS_NETWORK_SESSION_CONFIGURATOR_NETWORK_SESSION_CONFIGURATOR_H_
+
+#include <string>
+
+#include "base/command_line.h"
+#include "net/http/http_network_session.h"
+
+namespace network_session_configurator {
+
+// Configure |params| based on field trials and policy arguments.
+void ParseFieldTrials(bool is_spdy_allowed_by_policy,
+                      bool is_quic_allowed_by_policy,
+                      const std::string& quic_user_agent_id,
+                      net::HttpNetworkSession::Params* params);
+
+// Configure |params| based on field trials, policy arguments,
+// and command line.
+void ParseFieldTrialsAndCommandLine(bool is_spdy_allowed_by_policy,
+                                    bool is_quic_allowed_by_policy,
+                                    const std::string& quic_user_agent_id,
+                                    net::HttpNetworkSession::Params* params);
+
+}  // namespace network_session_configurator
+
+#endif  // COMPONENTS_NETWORK_SESSION_CONFIGURATOR_NETWORK_SESSION_CONFIGURATOR_H_