UMA: use a more frequent upload interval for Chromecast.

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 ddfe651d3ee29f3f87b26fbd729ed723592fc635..87df4e22f91dce345cf1e842216366b70e1e69ec 100644
--- a/components/metrics/metrics_reporting_scheduler.h
+++ b/components/metrics/metrics_reporting_scheduler.h
@@ -18,11 +18,12 @@ namespace metrics {
 class MetricsReportingScheduler {
  public:
   // 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.
+  // callback to call when uploading should happen and
+  // |upload_interval_callback| to determine the interval between uploads
+  // in steady state.
   MetricsReportingScheduler(
       const base::Closure& upload_callback,
-      const base::Callback<void(bool*)>& cellular_callback);
+      const base::Callback<base::TimeDelta(void)>& upload_interval_callback);
   ~MetricsReportingScheduler();
 
   // Starts scheduling uploads. This in a no-op if the scheduler is already
@@ -57,11 +58,13 @@ class MetricsReportingScheduler {
   // where the server is having issues.
   void BackOffUploadInterval();
 
-  // Returns upload interval based on the system and experiment that the user is
-  // assigned to.
+  // Returns upload interval to use in steady state.
+  base::TimeDelta GetStandardUploadInterval();
+
+  // Returns upload interval specified for the current experiment running.
   // TODO(gayane): Only for experimenting with upload interval for Android
   // (bug: 17391128). Should be removed once the experiments are done.
-  base::TimeDelta GetStandardUploadInterval();
+  base::TimeDelta GetUploadIntervalFromExperiment();

[Alexei Svitkine (slow), 2015/03/09 17:26:17]

This can be removed - see my other comment.

[gunsch, 2015/03/13 00:50:12]

Done.

 
   // The MetricsService method to call when uploading should happen.
   const base::Closure upload_callback_;
@@ -90,8 +93,8 @@ class MetricsReportingScheduler {
   // has been completed.
   bool waiting_for_init_task_complete_;
 
-  // Callback function used to get current network connection type.
-  base::Callback<void(bool*)> cellular_callback_;
+  // Callback function used to get the standard upload time.
+  base::Callback<base::TimeDelta(void)> upload_interval_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsReportingScheduler);
 };