Create a DataUseRecorder instance for each page load in Chrome.

chrome/browser/data_use_measurement/chrome_data_use_recorder.cc

Index: chrome/browser/data_use_measurement/chrome_data_use_recorder.cc
diff --git a/chrome/browser/data_use_measurement/chrome_data_use_recorder.cc b/chrome/browser/data_use_measurement/chrome_data_use_recorder.cc
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+// Copyright 2016 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/data_use_measurement/chrome_data_use_recorder.h"
+
+namespace data_use_measurement {
+
+ChromeDataUseRecorder::ChromeDataUseRecorder() : main_frame_id_(-1, -1) {}
+
+ChromeDataUseRecorder::ChromeDataUseRecorder(
+    const ChromeDataUseRecorder& other) :
+    DataUseRecorder(other),
+    main_frame_id_(other.main_frame_id_),
+    main_frame_request_id_(other.main_frame_request_id_) {}
+
+ChromeDataUseRecorder::~ChromeDataUseRecorder() {}
+
+}  // namespace data_use_measurement