Send TranslateEventProtos to UMA.

components/translate/core/browser/translate_ranker.cc

 // 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 "components/translate/core/browser/translate_ranker.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_util.h"
+#include "components/metrics/proto/translate_event.pb.h"
 #include "components/translate/core/browser/proto/translate_ranker_model.pb.h"
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "components/translate/core/browser/translate_prefs.h"
 #include "components/translate/core/browser/translate_url_fetcher.h"
 #include "components/translate/core/common/translate_switches.h"
 
 namespace translate {
 
 namespace {
 
@@ skipping 250 matching lines @@
   if (!is_valid) {
     ReportModelStatus(MODEL_STATUS_VALIDATION_FAILED);
     return;
   }
 
   ReportModelStatus(MODEL_STATUS_OK);
   model_ = std::move(new_model);
   model_fetcher_.reset();
 }
 
+void TranslateRanker::FlushTranslateEvents(
+    std::vector<metrics::TranslateEventProto>* translate_events) {
+  translate_events->swap(translate_events_cache_);
+  translate_events_cache_.clear();
+}
+
+void TranslateRanker::RecordTranslateEvent(
+    const metrics::TranslateEventProto& translate_event) {
+  translate_events_cache_.push_back(translate_event);
+}
+
 }  // namespace translate