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// 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/net/async_dns_field_trial.h"
#include "base/metrics/field_trial.h"
#include "build/build_config.h"
#include "chrome/common/chrome_version_info.h"
namespace chrome_browser_net {
bool ConfigureAsyncDnsFieldTrial() {
#if defined(OS_ANDROID) || defined(OS_IOS)
// There is no DnsConfigService on those platforms so disable the field trial.
return false;
#endif
const base::FieldTrial::Probability kAsyncDnsDivisor = 100;
base::FieldTrial::Probability enabled_probability = 0;
if (chrome::VersionInfo::GetChannel() <= chrome::VersionInfo::CHANNEL_DEV)
enabled_probability = 50;
scoped_refptr<base::FieldTrial> trial(
base::FieldTrialList::FactoryGetFieldTrial(
"AsyncDns", kAsyncDnsDivisor, "disabled", 2012, 10, 30, NULL));
int enabled_group = trial->AppendGroup("enabled", enabled_probability);
return trial->group() == enabled_group;
}
} // namespace chrome_browser_net
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