Send metrics with embedded system profiles after system startup.

components/metrics/metrics_log.cc

Index: components/metrics/metrics_log.cc
diff --git a/components/metrics/metrics_log.cc b/components/metrics/metrics_log.cc
index 0d9367b2e0c712e0ab70c7a4671f46dfe0675707..94117a7ca42bd821d05444548eb23b5e1f396d52 100644
--- a/components/metrics/metrics_log.cc
+++ b/components/metrics/metrics_log.cc
@@ -313,6 +313,19 @@ std::string MetricsLog::RecordEnvironment(
   return serialized_proto;
 }
 
+bool MetricsLog::LoadSavedEnvironmentFromProvider(
+    MetricsProvider* metrics_provider,
+    std::string* app_version) {
+  DCHECK(app_version);
+  app_version->clear();
+
+  SystemProfileProto* system_profile = uma_proto()->mutable_system_profile();
+  if (!metrics_provider->ProvideStabilitySystemProfile(system_profile))
+    return false;
+  *app_version = system_profile->app_version();
+  return true;
+}
+
 bool MetricsLog::LoadSavedEnvironmentFromPrefs(std::string* app_version) {
   DCHECK(app_version);
   app_version->clear();