Removed partial Client Hints implementation from the Chrome side.

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/base64.h"
 #include "base/bind.h"
@@ skipping 575 matching lines @@
 
 #if defined(ENABLE_EXTENSIONS)
   globals_->extension_event_router_forwarder =
       extension_event_router_forwarder_;
 #endif
 
   scoped_ptr<ChromeNetworkDelegate> chrome_network_delegate(
       new ChromeNetworkDelegate(extension_event_router_forwarder(),
                                 &system_enable_referrers_));
 
-  if (command_line.HasSwitch(switches::kEnableClientHints))
-    chrome_network_delegate->SetEnableClientHints();
-
 #if defined(ENABLE_EXTENSIONS)
   if (command_line.HasSwitch(switches::kDisableExtensionsHttpThrottling))
     chrome_network_delegate->NeverThrottleRequests();
 #endif
 
   globals_->system_network_delegate = chrome_network_delegate.Pass();
   globals_->host_resolver = CreateGlobalHostResolver(net_log_);
   UpdateDnsClientEnabled();
 #if defined(OS_CHROMEOS)
   // Creates a CertVerifyProc that doesn't allow any profile-provided certs.
@@ skipping 829 matching lines @@
   net::QuicVersionVector supported_versions = net::QuicSupportedVersions();
   for (size_t i = 0; i < supported_versions.size(); ++i) {
     net::QuicVersion version = supported_versions[i];
     if (net::QuicVersionToString(version) == quic_version) {
       return version;
     }
   }
 
   return net::QUIC_VERSION_UNSUPPORTED;
 }