Add popup layout tests with device scale factor

components/html_viewer/web_test_delegate_impl.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/html_viewer/web_test_delegate_impl.h"
 
 #include <iostream>
 #include <utility>
 
 #include "base/time/time.h"
@@ skipping 345 matching lines @@
     blink::WebLocalFrame* frame,
     const blink::WebPluginParams& params) {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
 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