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..6b6ed672883762cdc5c6ea94eb3d1bbd92e4ca13 100644
--- a/components/power/origin_power_map.cc
+++ b/components/power/origin_power_map.cc
@@ -49,4 +49,17 @@ OriginPowerMap::PercentOriginMap OriginPowerMap::GetPercentOriginMap() {
   return percent_map;
 }
 
+void OriginPowerMap::AddObserver(OriginPowerMapObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void OriginPowerMap::RemoveObserver(OriginPowerMapObserver* observer) {
+  observers_.RemoveObserver(observer);
+}
+
+void OriginPowerMap::OnPowerConsumptionUpdated() {
+  FOR_EACH_OBSERVER(
+      OriginPowerMapObserver, observers_, OnPowerConsumptionUpdated());
+}
+
 }  // namespace power