- Electron version: 0.36.12, 0.37.6
- Operating system: Kubuntu 15.10

Try Ctrl+Shift+F, find progress freeze always.

atom/browser/common_web_contents_delegate.cc
CommonWebContentsDelegate::GetDevToolsWebContents() const {
  if (!web_contents_)
    return nullptr;
  return web_contents_->GetDevToolsWebContents();
}
content::WebContents* CommonWebContentsDelegate::OpenURLFromTab(
    content::WebContents* source,
    const content::OpenURLParams& params) {
  content::NavigationController::LoadURLParams load_url_params(params.url);
  load_url_params.referrer = params.referrer;
  load_url_params.transition_type = params.transition;
  load_url_params.extra_headers = params.extra_headers;
  load_url_params.should_replace_current_entry =
      params.should_replace_current_entry;
  load_url_params.is_renderer_initiated = params.is_renderer_initiated;
  load_url_params.should_clear_history_list = true;
  source->GetController().LoadURLWithParams(load_url_params);
  return source;
}
bool CommonWebContentsDelegate::CanOverscrollContent() const {
  return false;
}
content::JavaScriptDialogManager*
CommonWebContentsDelegate::GetJavaScriptDialogManager(
    content::WebContents* source) {
  if (!dialog_manager_)
    dialog_manager_.reset(new AtomJavaScriptDialogManager);
  return dialog_manager_.get();
}
content::ColorChooser* CommonWebContentsDelegate::OpenColorChooser(