Added Client-Hints.

chrome/browser/io_thread.cc

 // 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.
 
 #include "chrome/browser/io_thread.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 455 matching lines @@
       new LoggingNetworkChangeObserver(net_log_));
 
   // Setup the HistogramWatcher to run on the IO thread.
   net::NetworkChangeNotifier::InitHistogramWatcher();
 
   globals_->extension_event_router_forwarder =
       extension_event_router_forwarder_;
   ChromeNetworkDelegate* network_delegate =
       new ChromeNetworkDelegate(extension_event_router_forwarder_,
                                 &system_enable_referrers_);
+  if (command_line.HasSwitch(switches::kEnableClientHints))
+    network_delegate->set_enable_client_hints();
   if (command_line.HasSwitch(switches::kDisableExtensionsHttpThrottling))
     network_delegate->NeverThrottleRequests();
   globals_->system_network_delegate.reset(network_delegate);
   globals_->host_resolver = CreateGlobalHostResolver(net_log_);
   UpdateDnsClientEnabled();
   globals_->cert_verifier.reset(net::CertVerifier::CreateDefault());
   globals_->transport_security_state.reset(new net::TransportSecurityState());
   globals_->ssl_config_service = GetSSLConfigService();
   if (command_line.HasSwitch(switches::kSpdyProxyAuthOrigin)) {
     spdyproxy_auth_origin_ =
@@ skipping 416 matching lines @@
   globals_->system_request_context.reset(
       ConstructSystemRequestContext(globals_, net_log_));
 
   sdch_manager_->set_sdch_fetcher(
       new SdchDictionaryFetcher(system_url_request_context_getter_.get()));
 }
 
 void IOThread::UpdateDnsClientEnabled() {
   globals()->host_resolver->SetDnsClientEnabled(*dns_client_enabled_);
 }