GetScaleFactorForNativeView should return scale factor in float

chrome/browser/ui/webui/chromeos/login/network_dropdown.cc

Index: chrome/browser/ui/webui/chromeos/login/network_dropdown.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/network_dropdown.cc b/chrome/browser/ui/webui/chromeos/login/network_dropdown.cc
index 7c0ee0346b96165888e5a175c47b2b5645adc9cf..19fe7ed6dd18f3791183a0d2d0b1aeeec4b62a19 100644
--- a/chrome/browser/ui/webui/chromeos/login/network_dropdown.cc
+++ b/chrome/browser/ui/webui/chromeos/login/network_dropdown.cc
@@ -90,8 +90,7 @@ base::ListValue* NetworkMenuWebUI::ConvertMenuModel(ui::MenuModel* model) {
     gfx::Image icon;
     if (model->GetIconAt(i, &icon)) {
       SkBitmap icon_bitmap = icon.ToImageSkia()->GetRepresentation(
-          ui::GetImageScale(
-              web_ui_->GetDeviceScaleFactor())).sk_bitmap();
+          web_ui_->GetDeviceScaleFactor()).sk_bitmap();
       item->SetString("icon", webui::GetBitmapDataUrl(icon_bitmap));
     }
     if (id >= 0) {
@@ -192,7 +191,7 @@ void NetworkDropdown::SetNetworkIconAndText() {
         RemoveObserver(this);
   }
   SkBitmap icon_bitmap = icon_image.GetRepresentation(
-      ui::GetImageScale(web_ui_->GetDeviceScaleFactor())).sk_bitmap();
+      web_ui_->GetDeviceScaleFactor()).sk_bitmap();
   std::string icon_str;
   if (!icon_image.isNull())
     icon_str = webui::GetBitmapDataUrl(icon_bitmap);