UMA: use a more frequent upload interval for Chromecast.

components/metrics/metrics_service.cc

Index: components/metrics/metrics_service.cc
diff --git a/components/metrics/metrics_service.cc b/components/metrics/metrics_service.cc
index 54e4deb73c6a2f5af67a2139d72af6869bd5a4e3..86d946aba5d58099dde47f3a341b32ff7b5b3152 100644
--- a/components/metrics/metrics_service.cc
+++ b/components/metrics/metrics_service.cc
@@ -341,7 +341,12 @@ void MetricsService::InitializeMetricsRecordingState() {
       base::Bind(&MetricsService::StartScheduledUpload,
                  self_ptr_factory_.GetWeakPtr());
   scheduler_.reset(
-      new MetricsReportingScheduler(upload_callback, is_cellular_callback_));
+      new MetricsReportingScheduler(
+          upload_callback,
+          // MetricsServiceClient outlives MetricsService, and
+          // MetricsReportingScheduler is tied to the lifetime of |this|.
+          base::Bind(&MetricsServiceClient::GetStandardUploadInterval,
+                     base::Unretained(client_))));
 }
 
 void MetricsService::Start() {
@@ -1224,10 +1229,4 @@ void MetricsService::RecordCurrentState(PrefService* pref) {
                  base::Time::Now().ToTimeT());
 }
 
-void MetricsService::SetConnectionTypeCallback(
-    base::Callback<void(bool*)> is_cellular_callback) {
-  DCHECK(!scheduler_);
-  is_cellular_callback_ = is_cellular_callback;
-}
-
 }  // namespace metrics