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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 "base/strings/string_util.h"
#include "build/build_config.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
#if defined(OS_CHROMEOS) || defined(OS_LINUX) || defined(OS_MACOSX)
const bool kDefault = true;
#else
const bool kDefault = false;
#endif
// Configure the AsyncDns field trial as follows:
// groups AsyncDnsA and AsyncDnsB: return true,
// groups SystemDnsA and SystemDnsB: return false,
// otherwise (trial absent): return default.
std::string group_name = base::FieldTrialList::FindFullName("AsyncDns");
if (!group_name.empty())
return StartsWithASCII(group_name, "AsyncDns", false /* case_sensitive */);
return kDefault;
}
} // namespace chrome_browser_net
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