Create component to expose network usage stats to consumers.

components/data_usage/core/data_use.cc

+// Copyright 2015 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 "components/data_usage/core/data_use.h"
+
+namespace data_usage {
+
+DataUse::DataUse(const GURL& url,
+                 const base::Time& request_time,
+                 const GURL& first_party_for_cookies,
+                 int32_t tab_id,
+                 net::NetworkChangeNotifier::ConnectionType connection_type,
+                 int64_t tx_bytes,
+                 int64_t rx_bytes)
+    : url(url),
+      request_time(request_time),
+      first_party_for_cookies(first_party_for_cookies),
+      tab_id(tab_id),
+      connection_type(connection_type),
+      tx_bytes(tx_bytes),
+      rx_bytes(rx_bytes) {}
+
+}  // namespace data_usage