Prevent browser-side hit testing when page popup is selected

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 569e113cf7165a2cfef658b060435f56a1b7a7af..8029626cbc7c375645185e8ce4173ddbb4835815 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2541,6 +2541,11 @@ bool WebContentsImpl::OnUpdateDragCursor() {
   return false;
 }
 
+bool WebContentsImpl::IsWidgetForMainFrame(
+    RenderWidgetHostImpl* render_widget_host) {
+  return render_widget_host == GetMainFrame()->GetRenderWidgetHost();
+}
+
 BrowserAccessibilityManager*
     WebContentsImpl::GetRootBrowserAccessibilityManager() {
   RenderFrameHostImpl* rfh = GetMainFrame();