Revert of Support device scale factor test with popups in LayoutTest

components/html_viewer/web_test_delegate_impl.cc

Index: components/html_viewer/web_test_delegate_impl.cc
diff --git a/components/html_viewer/web_test_delegate_impl.cc b/components/html_viewer/web_test_delegate_impl.cc
index 85dc03cff61c29ba07b5c53cafdd848d11160098..0be84ded7497ce5233d6ae0a217b1519516b3f3e 100644
--- a/components/html_viewer/web_test_delegate_impl.cc
+++ b/components/html_viewer/web_test_delegate_impl.cc
@@ -362,10 +362,4 @@ void WebTestDelegateImpl::OnWebTestProxyBaseDestroy(
     test_runner::WebTestProxyBase* base) {
 }
 
-blink::WebPoint WebTestDelegateImpl::ConvertDIPToNative(
-    const blink::WebPoint& point_in_dip) const {
-  NOTIMPLEMENTED();
-  return point_in_dip;
-}
-
 }  // namespace html_viewer