Creating Ui for Battery State Option in Chrome Os Emulator

chrome/browser/ui/webui/chromeos/emulator/device_emulator_message_handler.cc

Index: chrome/browser/ui/webui/chromeos/emulator/device_emulator_message_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/emulator/device_emulator_message_handler.cc b/chrome/browser/ui/webui/chromeos/emulator/device_emulator_message_handler.cc
index ce7f8bb1fd5e57fc242523856eb5898ab248d1ba..0b65a89e6d8c45965e6a3a503b77cec50f3ee28a 100644
--- a/chrome/browser/ui/webui/chromeos/emulator/device_emulator_message_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/emulator/device_emulator_message_handler.cc
@@ -21,6 +21,7 @@ const char kRequestPowerInfo[] = "requestPowerInfo";
 // Define update functions that will update the power properties to the
 // variables defined in the web UI.
 const char kUpdateBatteryPercent[] = "updateBatteryPercent";
+const char kUpdateBatteryState[] = "updateBatteryState";
 const char kUpdateExternalPower[] = "updateExternalPower";
 const char kUpdateTimeToEmpty[] = "updateTimeToEmpty";
 const char kUpdateTimeToFull[] = "updateTimeToFull";
@@ -62,6 +63,19 @@ void DeviceEmulatorMessageHandler::UpdateBatteryPercent(
   fake_power_manager_client_->UpdatePowerProperties(props);
 }
 
+void DeviceEmulatorMessageHandler::UpdateBatteryState(
+    const base::ListValue* args) {
+  int battery_state;
+  args->GetInteger(0, &battery_state);
+
+  power_manager::PowerSupplyProperties props =
+      fake_power_manager_client_->props();
+  props.set_battery_state(
+      static_cast<power_manager::PowerSupplyProperties_BatteryState>(
+          battery_state));
+  fake_power_manager_client_->UpdatePowerProperties(props);
+}
+
 void DeviceEmulatorMessageHandler::UpdateExternalPower(
     const base::ListValue* args) {
   int power_source;
@@ -102,11 +116,12 @@ void DeviceEmulatorMessageHandler::PowerChanged(
   web_ui()->CallJavascriptFunction(
       kUpdatePowerPropertiesJSCallback,
       base::FundamentalValue(proto.battery_percent()),
+      base::FundamentalValue(proto.battery_state())),
       base::FundamentalValue(proto.external_power()),
       base::FundamentalValue(
           static_cast<int>(proto.battery_time_to_empty_sec())),
       base::FundamentalValue(
-          static_cast<int>(proto.battery_time_to_full_sec())));
+          static_cast<int>(proto.battery_time_to_full_sec()));
 }
 
 void DeviceEmulatorMessageHandler::RegisterMessages() {
@@ -119,6 +134,10 @@ void DeviceEmulatorMessageHandler::RegisterMessages() {
       base::Bind(&DeviceEmulatorMessageHandler::UpdateBatteryPercent,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback(
+      kUpdateBatteryState,
+      base::Bind(&DeviceEmulatorMessageHandler::UpdateBatteryState,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
       kUpdateExternalPower,
       base::Bind(&DeviceEmulatorMessageHandler::UpdateExternalPower,
                  base::Unretained(this)));