Enable UMA log uploads for cellular networks.

components/metrics/metrics_reporting_scheduler.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_METRICS_METRICS_REPORTING_SCHEDULER_H_
 #define COMPONENTS_METRICS_METRICS_REPORTING_SCHEDULER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #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 {
 
 // Scheduler task to drive a MetricsService object's uploading.
 class MetricsReportingScheduler {
  public:
-  explicit MetricsReportingScheduler(const base::Closure& upload_callback);
+  // Creates MetricsServiceScheduler object with the given |upload_callback|
+  // callback to call when uploading should happen and |cellular_callback|
+  // callback to get current network connection type.
+  MetricsReportingScheduler(
+      const base::Closure& upload_callback,
+      const base::Callback<void(bool*)>& cellular_callback);
   ~MetricsReportingScheduler();
 
   // Starts scheduling uploads. This in a no-op if the scheduler is already
   // running, so it is safe to call more than once.
   void Start();
 
   // Stops scheduling uploads.
   void Stop();
 
   // Callback from MetricsService when the startup init task has completed.
@@ skipping 47 matching lines @@
   // Indicates that the last triggered upload hasn't resolved yet.
   bool callback_pending_;
 
   // Whether the InitTaskComplete() callback has been called.
   bool init_task_complete_;
 
   // Whether the initial scheduled upload timer has fired before the init task
   // has been completed.
   bool waiting_for_init_task_complete_;
 
+  // Callback function used to get current network connection type.
+  base::Callback<void(bool*)> cellular_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(MetricsReportingScheduler);
 };
 
 }  // namespace metrics
 
 #endif  // COMPONENTS_METRICS_METRICS_REPORTING_SCHEDULER_H_