Refactoring ConstructLanguageDetectionEvent.

components/translate/core/common/language_detection_logging_helper.cc

+// Copyright 2017 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/translate/core/common/language_detection_logging_helper.h"
+
+#include <memory>
+
+#include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "components/sync/protocol/user_event_specifics.pb.h"
+#include "components/translate/core/common/language_detection_details.h"
+
+namespace translate {
+
+std::unique_ptr<sync_pb::UserEventSpecifics> ConstructLanguageDetectionEvent(
+    const LanguageDetectionDetails& details) {
+  auto specifics = base::MakeUnique<sync_pb::UserEventSpecifics>();
+  specifics->set_event_time_usec(base::Time::Now().ToInternalValue());
+
+  // TODO(renjieliu): Revisit this field when the best way to identify
+  // navigations is determined.
+  specifics->set_navigation_id(base::Time::Now().ToInternalValue());
+
+  sync_pb::LanguageDetection lang_detection;
+  auto* const lang = lang_detection.add_detected_languages();
+  lang->set_language_code(details.cld_language);
+  lang->set_is_reliable(details.is_cld_reliable);
+  // Only set adopted_language when it's different from cld_language.
+  if (details.adopted_language != details.cld_language) {
+    lang_detection.set_adopted_language_code(details.adopted_language);
+  }
+  *specifics->mutable_language_detection() = lang_detection;
+  return specifics;
+}
+}  // namespace translate