Binds prefetching to the predictive networking privacy option.

chrome/browser/prefetch/prefetch.cc

+// 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"
+
+namespace prefetch {
+
+bool IsPrefetchEnabled(content::ResourceContext* resource_context) {
+  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
+  if (io_data != NULL && io_data->network_prediction_enabled()->GetValue())
+    return IsPrefetchFieldTrialEnabled();
+  return false;
+}
+
+}  // namespace prefetch