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// Copyright 2014 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/prefetch/prefetch.h"
#include <string>
#include "base/metrics/field_trial.h"
#include "base/strings/string_util.h"
#include "chrome/browser/prefetch/prefetch_field_trial.h"
#include "chrome/browser/profiles/profile_io_data.h"
#include "net/base/network_change_notifier.h"
namespace prefetch {
bool IsPrefetchEnabled(content::ResourceContext* resource_context) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
// TODO(jkarlin): Eventually tie this to a new Chrome preference to predict
// network actions when on cellular connections. See crbug.com/370454.
if (net::NetworkChangeNotifier::IsConnectionCellular(
net::NetworkChangeNotifier::GetConnectionType()))
return false;
ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
if (io_data != NULL && io_data->network_prediction_enabled()->GetValue())
return IsPrefetchFieldTrialEnabled();
return false;
}
} // namespace prefetch
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