Modifications for recording whether UMA/Crash default state for iOS

components/metrics/metrics_reporting_default_state.cc

Index: components/metrics/metrics_reporting_default_state.cc
diff --git a/components/metrics/metrics_reporting_default_state.cc b/components/metrics/metrics_reporting_default_state.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a3600ff87a3df1568f80923426b62651b8ea7ecc
--- /dev/null
+++ b/components/metrics/metrics_reporting_default_state.cc
@@ -0,0 +1,30 @@
+// 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/metrics/metrics_reporting_default_state.h"
+
+#include "components/metrics/metrics_pref_names.h"
+
+namespace metrics {
+
+void RegisterMetricsReportingStatePrefs(PrefRegistrySimple* registry) {
+  registry->RegisterIntegerPref(metrics::prefs::kMetricsDefaultOptIn,

[Alexei Svitkine (slow), 2016/05/26 19:24:15]

Nit: No need for metrics:: prefix. Remove it from all the places below too.

[gayane -on leave until 09-2017, 2016/05/26 20:33:37]

Done.

+                                metrics::MetricsServiceClient::DEFAULT_UNKNOWN);
+}
+
+void RecordMetricsReportingDefaultOptIn(PrefService* local_state, bool opt_in) {
+  DCHECK(GetMetricsReportingDefaultOptIn(local_state) ==
+         metrics::MetricsServiceClient::DEFAULT_UNKNOWN);
+  local_state->SetInteger(metrics::prefs::kMetricsDefaultOptIn,
+                          opt_in ? metrics::MetricsServiceClient::OPT_IN
+                                 : metrics::MetricsServiceClient::OPT_OUT);
+}
+
+metrics::MetricsServiceClient::EnableMetricsDefault
+GetMetricsReportingDefaultOptIn(PrefService* local_state) {
+  return static_cast<metrics::MetricsServiceClient::EnableMetricsDefault>(
+      local_state->GetInteger(metrics::prefs::kMetricsDefaultOptIn));
+}
+
+}  // namespace metrics