Revert "Revert of Support device scale factor test with popups in LayoutTest (patchset #2 id:40001 …

components/test_runner/web_test_proxy.cc

Index: components/test_runner/web_test_proxy.cc
diff --git a/components/test_runner/web_test_proxy.cc b/components/test_runner/web_test_proxy.cc
index 9cd2372263b0ac081f43db23b6c39bb4eb126844..76fa57052f5a7315482ac1cbdb4458b716291ac3 100644
--- a/components/test_runner/web_test_proxy.cc
+++ b/components/test_runner/web_test_proxy.cc
@@ -673,7 +673,8 @@ void WebTestProxyBase::CapturePixelsAsync(
   web_widget_->compositeAndReadbackAsync(capture_callback);
   if (blink::WebPagePopup* popup = web_widget_->pagePopup()) {
     capture_callback->set_wait_for_popup(true);
-    capture_callback->set_popup_position(popup->positionRelativeToOwner());
+    capture_callback->set_popup_position(
+        delegate_->ConvertDIPToNative(popup->positionRelativeToOwner()));
     popup->compositeAndReadbackAsync(capture_callback);
   }
 }