Add network information to UKM

chrome/browser/metrics/chrome_metrics_service_client.h

Index: chrome/browser/metrics/chrome_metrics_service_client.h
diff --git a/chrome/browser/metrics/chrome_metrics_service_client.h b/chrome/browser/metrics/chrome_metrics_service_client.h
index 11dff40f32a268840bc3f1ef6dd7e2a2621db7b0..6f12e37422109a1ffcb9cbc022f1579a751d49fa 100644
--- a/chrome/browser/metrics/chrome_metrics_service_client.h
+++ b/chrome/browser/metrics/chrome_metrics_service_client.h
@@ -102,6 +102,14 @@ class ChromeMetricsServiceClient : public metrics::MetricsServiceClient,
   // Completes the two-phase initialization of ChromeMetricsServiceClient.
   void Initialize();
 
+  // Registers providers to the MetricsService. These provide data from
+  // alternate sources.
+  void RegisterMetricsServiceProviders();
+
+  // Registers providers to the UkmService. These provide data from alternate
+  // sources.
+  void RegisterUKMProviders();
+
   // Callback to chain init tasks: Pops and executes the next init task from
   // |initialize_task_queue_|, then passes itself as callback for each init task
   // to call upon completion.