Send metrics with embedded system profiles after system startup.

components/metrics/metrics_log.h

Index: components/metrics/metrics_log.h
diff --git a/components/metrics/metrics_log.h b/components/metrics/metrics_log.h
index 4f28b43b3aea02211acebfaa0faad61d615a088e..760500b3681e8e3b9932a07f7706fd73dad2f016 100644
--- a/components/metrics/metrics_log.h
+++ b/components/metrics/metrics_log.h
@@ -100,6 +100,13 @@ class MetricsLog {
       int64_t install_date,
       int64_t metrics_reporting_enabled_date);
 
+  // Loads the environment proto as known to the passed |metrics provider|.
+  // On success, returns true and |app_version| contains the recovered version.
+  // Otherwise (if there was no saved environment or it could not be decoded),
+  // returns false and |app_version| is empty.
+  bool LoadSavedEnvironmentFromProvider(MetricsProvider* metrics_provider,
+                                        std::string* app_version);
+
   // Loads the environment proto that was saved by the last RecordEnvironment()
   // call from prefs. On success, returns true and |app_version| contains the
   // recovered version. Otherwise (if there was no saved environment in prefs