Render Ash material design battery image icon without PNGs

ash/common/system/chromeos/power/tray_power.cc

Index: ash/common/system/chromeos/power/tray_power.cc
diff --git a/ash/common/system/chromeos/power/tray_power.cc b/ash/common/system/chromeos/power/tray_power.cc
index fe82b93393c08b1e3eef9f5ce7383b5e99fbe216..e1f8c1f9e1dc8644a1330956e017870fa2855d17 100644
--- a/ash/common/system/chromeos/power/tray_power.cc
+++ b/ash/common/system/chromeos/power/tray_power.cc
@@ -119,7 +119,7 @@ class PowerTrayView : public views::ImageView {
     const PowerStatus::BatteryImageInfo info =
         PowerStatus::Get()->GetBatteryImageInfo(PowerStatus::ICON_LIGHT);
     if (info != previous_image_info_) {
-      SetImage(PowerStatus::Get()->GetBatteryImage(PowerStatus::ICON_LIGHT));
+      SetImage(PowerStatus::Get()->GetBatteryImage(info));
       previous_image_info_ = info;
     }
   }