These events are emitted for every navigation request which isn't really efficient. Also upstream has removed the observers that provide these details as part of network servification https://chromium-review.googlesource.com/c/chromium/src/+/805008 and https://chromium-review.googlesource.com/c/chromium/src/+/786320. We are removing it as a part of chromium 66 upgrade.

Proposed alternative: Users can use the [webRequest](https://github.com/electron/electron/blob/master/docs/api/web-request.md) module which provides similar navigation details on a subscription basis.
atom/browser/api/atom_api_web_contents.cc
web_contents()->Delete();
}
void WebContents::SelectAll() {
  web_contents()->SelectAll();
}
void WebContents::Unselect() {
  web_contents()->CollapseSelection();
}
void WebContents::Replace(const base::string16& word) {
  web_contents()->Replace(word);
}
void WebContents::ReplaceMisspelling(const base::string16& word) {
  web_contents()->ReplaceMisspelling(word);
}
uint32_t WebContents::FindInPage(mate::Arguments* args) {
  uint32_t request_id = GetNextRequestId();
  base::string16 search_text;
  blink::WebFindOptions options;
  if (!args->GetNext(&search_text) || search_text.empty()) {
    args->ThrowError("Must provide a non-empty search content");
    return 0;
  }
  args->GetNext(&options);
  web_contents()->Find(request_id, search_text, options);
  return request_id;
}
void WebContents::StopFindInPage(content::StopFindAction action) {
  web_contents()->StopFinding(action);
}
void WebContents::ShowDefinitionForSelection() {