Enable UMA log uploads for cellular networks.

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 18ec2e55bddae79355348dcc22bbf3e848231092..47c8076042afbbe2eb296c145edfc9c332a966d9 100644
--- a/components/metrics/metrics_service.cc
+++ b/components/metrics/metrics_service.cc
@@ -348,9 +348,11 @@ MetricsService::~MetricsService() {
 void MetricsService::InitializeMetricsRecordingState() {
   InitializeMetricsState();
 
-  base::Closure callback = base::Bind(&MetricsService::StartScheduledUpload,
-                                      self_ptr_factory_.GetWeakPtr());
-  scheduler_.reset(new MetricsReportingScheduler(callback));
+  base::Closure upload_callback =
+      base::Bind(&MetricsService::StartScheduledUpload,
+                 self_ptr_factory_.GetWeakPtr());
+  scheduler_.reset(
+      new MetricsReportingScheduler(upload_callback, is_cellular_callback_));
 }
 
 void MetricsService::Start() {
@@ -1263,4 +1265,10 @@ 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