Update the Website Settings page when the power consumption is updated.

components/power/origin_power_map.cc

Index: components/power/origin_power_map.cc
diff --git a/components/power/origin_power_map.cc b/components/power/origin_power_map.cc
index dfb0f172a93d510d5d013c9ae39b47717f731f71..4ce32e28f0cbfa74abb4403e723ac7917eb5d4d9 100644
--- a/components/power/origin_power_map.cc
+++ b/components/power/origin_power_map.cc
@@ -49,4 +49,14 @@ OriginPowerMap::PercentOriginMap OriginPowerMap::GetPercentOriginMap() {
   return percent_map;
 }
 
+scoped_ptr<OriginPowerMap::Subscription>
+OriginPowerMap::AddPowerConsumptionUpdatedCallback(
+    const base::Closure& callback) {
+  return callback_list_.Add(callback);
+}
+
+void OriginPowerMap::OnAllOriginsUpdated() {
+  callback_list_.Notify();
+}
+
 }  // namespace power