Perform ClientHello padding if the field trial is enabled

chrome/browser/io_thread.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 CHROME_BROWSER_IO_THREAD_H_
 #define CHROME_BROWSER_IO_THREAD_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 41 matching lines @@
 class HostMappingRules;
 class HostResolver;
 class HttpAuthHandlerFactory;
 class HttpServerProperties;
 class HttpTransactionFactory;
 class HttpUserAgentSettings;
 class NetworkDelegate;
 class ProxyConfigService;
 class ProxyService;
 class SSLConfigService;
+class SSLSocketConfigService;
 class TransportSecurityState;
 class URLRequestContext;
 class URLRequestContextGetter;
 class URLRequestJobFactory;
 class URLRequestThrottlerManager;
 class URLSecurityManager;
 }  // namespace net
 
 namespace policy {
 class PolicyService;
@@ skipping 119 matching lines @@
     Optional<size_t> quic_max_packet_length;
     net::QuicTagVector quic_connection_options;
     Optional<std::string> quic_user_agent_id;
     Optional<net::QuicVersionVector> quic_supported_versions;
     Optional<net::HostPortPair> origin_to_force_quic_on;
     bool enable_user_alternate_protocol_ports;
     // NetErrorTabHelper uses |dns_probe_service| to send DNS probes when a
     // main frame load fails with a DNS error in order to provide more useful
     // information to the renderer so it can show a more specific error page.
     scoped_ptr<chrome_browser_net::DnsProbeService> dns_probe_service;
+    scoped_ptr<net::SSLSocketConfigService> ssl_socket_config_service;
   };
 
   // |net_log| must either outlive the IOThread or be NULL.
   IOThread(PrefService* local_state,
            policy::PolicyService* policy_service,
            ChromeNetLog* net_log,
            extensions::EventRouterForwarder* extension_event_router_forwarder);
 
   ~IOThread() override;
 
@@ skipping 90 matching lines @@
   net::SSLConfigService* GetSSLConfigService();
 
   void ChangedToOnTheRecordOnIOThread();
 
   void UpdateDnsClientEnabled();
 
   // Configures QUIC options based on the flags in |command_line| as
   // well as the QUIC field trial group.
   void ConfigureQuic(const base::CommandLine& command_line);
 
+  // Configures SSLSocketConfigService based on the flags in |command_line| as
+  // well as the ClientHello field trial group.
+  void ConfigureSSLSocketConfigService(const base::CommandLine& command_line);
+
   extensions::EventRouterForwarder* extension_event_router_forwarder() {
 #if defined(ENABLE_EXTENSIONS)
     return extension_event_router_forwarder_;
 #else
     return NULL;
 #endif
   }
   // Configures QUIC options in |globals| based on the flags in |command_line|
   // as well as the QUIC field trial group and parameters.
   static void ConfigureQuicGlobals(
@@ skipping 68 matching lines @@
   static net::QuicTagVector GetQuicConnectionOptions(
       const base::CommandLine& command_line,
       const VariationParameters& quic_trial_params);
 
   // Returns the alternate protocol probability threshold specified by
   // any flags in |command_line| or |quic_trial_params|.
   static double GetAlternateProtocolProbabilityThreshold(
       const base::CommandLine& command_line,
       const VariationParameters& quic_trial_params);
 
+  // Configures the SSLSocketConfigService in |globals| based on the flags in
+  // |command_line| as well as the ClientHello field trial group.
+  static void ConfigureSSLSocketConfigServiceGlobals(
+      const base::CommandLine& command_line,
+      base::StringPiece client_hello_trial_group,
+      Globals* globals);
+
   // The NetLog is owned by the browser process, to allow logging from other
   // threads during shutdown, but is used most frequently on the IOThread.
   ChromeNetLog* net_log_;
 
 #if defined(ENABLE_EXTENSIONS)
   // The extensions::EventRouterForwarder allows for sending events to
   // extensions from the IOThread.
   extensions::EventRouterForwarder* extension_event_router_forwarder_;
 #endif
 
@@ skipping 42 matching lines @@
   bool is_spdy_disabled_by_policy_;
 
   const base::TimeTicks creation_time_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_