Enable UMA log uploads for cellular networks.

components/metrics/metrics_reporting_scheduler.h

Index: components/metrics/metrics_reporting_scheduler.h
diff --git a/components/metrics/metrics_reporting_scheduler.h b/components/metrics/metrics_reporting_scheduler.h
index 19f07570663727eb2c8c259b91fb073fd0477e8d..839882feac2011ecbcd1847f0fa0ad5a718786a2 100644
--- a/components/metrics/metrics_reporting_scheduler.h
+++ b/components/metrics/metrics_reporting_scheduler.h
@@ -10,6 +10,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
+#include "components/metrics/net/network_metrics_provider.h"
 
 namespace metrics {
 
@@ -39,6 +40,13 @@ class MetricsReportingScheduler {
   // Sets the upload interval to a specific value, exposed for unit tests.
   void SetUploadIntervalForTesting(base::TimeDelta interval);
 
+  // Sets class variable |network_metrics_provider| for having access to
+  // connection type.
+  void SetNetworkMetricsProvider(
+      const metrics::NetworkMetricsProvider* network_metrics_provider);
+
+  // Returns true if the connection type is 2G, 3G, or 4G.
+  bool IsCellularConnection();

[Alexei Svitkine (slow), 2015/02/13 21:11:41]

Nit: Add an empty line after this.

[gayane -on leave until 09-2017, 2015/02/13 22:23:13]

Done.

  private:
   // Timer callback indicating it's time for the MetricsService to upload
   // metrics.
@@ -84,6 +92,9 @@ class MetricsReportingScheduler {
   // has been completed.
   bool waiting_for_init_task_complete_;
 
+  // Used to get the connection type for deciding on upload interval.
+  const metrics::NetworkMetricsProvider* network_metrics_provider_;
+
   DISALLOW_COPY_AND_ASSIGN(MetricsReportingScheduler);
 };