Complete the layered architecture of data_use_measurement component.

components/data_use_measurement/content/data_use_measurement_delegate_imp.cc

Index: components/data_use_measurement/content/data_use_measurement_delegate_imp.cc
diff --git a/components/data_use_measurement/content/data_use_measurement_delegate_imp.cc b/components/data_use_measurement/content/data_use_measurement_delegate_imp.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/content/data_use_measurement_delegate_imp.h"
+
+#include "content/public/browser/resource_request_info.h"
+
+namespace data_use_measurement {
+
+bool DataUseMeasurementDelegateImp::RequestIsFromUser(
+    const net::URLRequest* request) {
+  const content::ResourceRequestInfo* info =
+      content::ResourceRequestInfo::ForRequest(request);
+  // Having |info| is the sign of a request for a web content from user. For now
+  // we could add a condition to check ProcessType in info is
+  // content::PROCESS_TYPE_RENDERER, but it won't be compatible with upcoming
+  // PlzNavigate architecture. So just existence of |info| is verified, and the
+  // current check should be compatible with upcoming changes in PlzNavigate.
+  return info != nullptr;
+}
+
+}  // namespace data_use_measurement