Support needed to measure user and service traffic in Chrome.

components/data_use_measurement/content/data_use_user_data.cc

Index: components/data_use_measurement/content/data_use_user_data.cc
diff --git a/components/data_use_measurement/content/data_use_user_data.cc b/components/data_use_measurement/content/data_use_user_data.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d7c78c4fdb74639a63122a2bbdc708f7e749d27f
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+++ b/components/data_use_measurement/content/data_use_user_data.cc
@@ -0,0 +1,24 @@
+// 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 <string>
+
+#include "components/data_use_measurement/content/data_use_user_data.h"
+
+namespace data_use_measurement {
+DataUseUserData::DataUseUserData(std::string service_name)
+    : service_name_(service_name) {}
+
+DataUseUserData::~DataUseUserData() {}
+
+// static
+const void* DataUseUserData::kUserDataKey =
+    static_cast<const void*>(&DataUseUserData::kUserDataKey);
+
+// Helper function to create DataUseUserData.
+base::SupportsUserData::Data* CreateDataUseUserData(
+      std::string service_name) {
+    return new DataUseUserData(service_name);
+}
+} // data_use_measurement namespace