diff options
Diffstat (limited to 'chrome/browser/io_thread.cc')
| -rw-r--r-- | chrome/browser/io_thread.cc | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc index 3780118..f361b77 100644 --- a/chrome/browser/io_thread.cc +++ b/chrome/browser/io_thread.cc @@ -57,26 +57,8 @@ net::HostResolver* CreateGlobalHostResolver(net::NetLog* net_log) { net::HostResolverImpl* host_resolver_impl = global_host_resolver->GetAsHostResolverImpl(); if (host_resolver_impl != NULL) { - // (optionally) Use probe to decide if support is warranted. - bool use_ipv6_probe = true; - -#if defined(OS_WIN) - // Measure impact of probing to allow IPv6. - // Some users report confused OS handling of IPv6, leading to large - // latency. If we can show that IPv6 is not supported, then disabliing - // it will work around such problems. This is the test of the probe. - const FieldTrial::Probability kDivisor = 100; - const FieldTrial::Probability kProbability = 50; // 50% probability. - FieldTrial* trial = new FieldTrial("IPv6_Probe", kDivisor); - int skip_group = trial->AppendGroup("IPv6_probe_skipped", - kProbability); - trial->AppendGroup("IPv6_probe_done", - FieldTrial::kAllRemainingProbability); - use_ipv6_probe = (trial->group() != skip_group); -#endif - - if (use_ipv6_probe) - host_resolver_impl->ProbeIPv6Support(); + // Use probe to decide if support is warranted. + host_resolver_impl->ProbeIPv6Support(); } } } |