Support needed to measure user and service traffic in Chrome.

components/data_use_measurement/core/data_use_user_data.cc

Index: components/data_use_measurement/core/data_use_user_data.cc
diff --git a/components/data_use_measurement/core/data_use_user_data.cc b/components/data_use_measurement/core/data_use_user_data.cc
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+++ b/components/data_use_measurement/core/data_use_user_data.cc
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+// 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_use_measurement/core/data_use_user_data.h"
+
+namespace data_use_measurement {
+
+DataUseUserData::DataUseUserData(ServiceType service_type)
+    : service_type_(service_type) {}
+
+DataUseUserData::~DataUseUserData() {}
+
+// static
+const void* DataUseUserData::kUserDataKey =
+    static_cast<const void*>(&DataUseUserData::kUserDataKey);
+
+base::SupportsUserData::Data* CreateDataUseUserData(
+    DataUseUserData::ServiceType service_type) {
+  return new DataUseUserData(service_type);
+}
+
+const char* GetServiceName(DataUseUserData::ServiceType service_type) {
+  switch (service_type) {
+    case DataUseUserData::SUGGESTIONS:
+      return "Suggestions";
+    case DataUseUserData::NOT_TAGGED:
+      return "NotTagged";
+    default:
+      NOTREACHED() << "Unknown service type in DataUseUserData";
+  }
+  return "INVALID";
+}
+
+}  // namespace data_use_measurement