Add components/network_session_configurator.

components/network_session_configurator/network_session_configurator.h

+// Copyright (c) 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);
+
+// Returns true if QUIC should be enabled for data reduction proxy, either
+// as a result of a field trial or a command line flag.
+bool ShouldEnableQuicForDataReductionProxy(
+    const base::CommandLine& command_line);
+
+}  // namespace network_session_configurator
+
+#endif  // COMPONENTS_NETWORK_SESSION_CONFIGURATOR_NETWORK_SESSION_CONFIGURATOR_H_

[Ryan Hamilton, 2016/04/21 21:15:25]

It's too bad this name is so long.