[Cleanup] Clean up the VariationsSeedStore's histograms.

components/variations/metrics.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/variations/metrics.h"
+
+#include "base/metrics/histogram_macros.h"
+
+namespace variations {
+
+#if defined(OS_ANDROID)
+void RecordFirstRunSeedImportResult(FirstRunSeedImportResult result) {
+  UMA_HISTOGRAM_ENUMERATION("Variations.FirstRunResult", result,
+                            FirstRunSeedImportResult::ENUM_SIZE);
+}
+#endif  // OS_ANDROID
+
+void RecordLoadSeedResult(LoadSeedResult state) {
+  UMA_HISTOGRAM_ENUMERATION("Variations.SeedLoadResult", state,
+                            LoadSeedResult::ENUM_SIZE);
+}
+
+void RecordStoreSeedResult(StoreSeedResult result) {
+  UMA_HISTOGRAM_ENUMERATION("Variations.SeedStoreResult", result,
+                            StoreSeedResult::ENUM_SIZE);
+}
+
+}  // namespace variations