[net] Add WifiPhyMode to SystemProfile

net/base/host_resolver_impl.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 "net/base/host_resolver_impl.h"
 
 #if defined(OS_WIN)
 #include <Winsock2.h>
 #elif defined(OS_POSIX)
 #include <netdb.h>
@@ skipping 1964 matching lines @@
 
   *addresses = AddressList::CreateFromIPAddress(it->second, info.port());
   return true;
 }
 
 void HostResolverImpl::CacheResult(const Key& key,
                                    const HostCache::Entry& entry,
                                    base::TimeDelta ttl) {
   if (cache_.get())
     cache_->Set(key, entry, base::TimeTicks::Now(), ttl);
+  base::TimeTicks then = base::TimeTicks::Now();

[rvargas (doing something else), 2013/02/12 02:42:33]

You don't mean to check this in, right?

[szym, 2013/02/12 04:53:43]

No, sorry, this is just my shamefully dirty way of testing that it works. (My
test machine is a ganky old WinXP laptop, so it's easy to just copy
mini_installer.)

+  WifiPhyMode phy_mode = GetWifiPhyMode();
+  UMA_HISTOGRAM_TIMES("WifiPHY.Time", base::TimeTicks::Now() - then);
+  UMA_HISTOGRAM_COUNTS("WifiPHY.Mode", phy_mode);
 }
 
 void HostResolverImpl::RemoveJob(Job* job) {
   DCHECK(job);
   JobMap::iterator it = jobs_.find(job->key());
   if (it != jobs_.end() && it->second == job)
     jobs_.erase(it);
 }
 
 void HostResolverImpl::IPv6ProbeSetDefaultAddressFamily(
@@ skipping 176 matching lines @@
   }
   DnsConfig dns_config;
   NetworkChangeNotifier::GetDnsConfig(&dns_config);
   dns_client_->SetConfig(dns_config);
   num_dns_failures_ = 0;
   if (dns_config.IsValid())
     UMA_HISTOGRAM_BOOLEAN("AsyncDNS.DnsClientEnabled", true);
 }
 
 }  // namespace net