Fix file input dialog from out-of-process iframe.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 3cb989d5ae28b7f4c3b76487cb4f909bf0237559..69e38bf02439bedd4eeba4c461bb321b7631ee35 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -3848,8 +3848,8 @@ bool RenderFrameImpl::runModalBeforeUnloadDialog(bool is_reload) {
 bool RenderFrameImpl::runFileChooser(
     const blink::WebFileChooserParams& params,
     blink::WebFileChooserCompletion* chooser_completion) {
-  // Do not open the file dialog in a hidden RenderView.
-  if (render_view_->is_hidden())
+  // Do not open the file dialog in a hidden RenderFrame.
+  if (IsHidden())
     return false;
 
   FileChooserParams ipc_params;