Send metrics with embedded system profiles after system startup.

components/metrics/metrics_provider.h

Index: components/metrics/metrics_provider.h
diff --git a/components/metrics/metrics_provider.h b/components/metrics/metrics_provider.h
index 54c0a8949042360ae3ef7f5b6be52547a21efc9f..844e904dcee0a9ed4b4078734e3dd661c61dda1f 100644
--- a/components/metrics/metrics_provider.h
+++ b/components/metrics/metrics_provider.h
@@ -42,6 +42,11 @@ class MetricsProvider {
   // further notification after this callback.
   virtual void OnAppEnterBackground();
 
+  // Provides initial system profile. If no provider supplies this, one will
+  // be created using system information.
+  virtual bool ProvideStabilitySystemProfile(
+      SystemProfileProto* system_profile_proto);
+
   // Provides additional metrics into the system profile.
   virtual void ProvideSystemProfileMetrics(
       SystemProfileProto* system_profile_proto);