- Electron version: 0.37.6
- Operating system: Windows 10

In VSCode, in order to support screen readers while editing text, we set the contents of a `<textarea>` to the contents of the line and lines surrounding the cursor and we mirror the editor selection in the `<textarea>` via `setSelectionRange`.

Chromium is not the fastest when it comes to setting large amounts of text :) (such as > 10,000 characters) and basically stalls all the time. Apparently, Electron already has some knowledge about when a screen reader is attached to the main process window (in C++ code). Is it possible to expose this as a getter + event when it first happens in the `electron` API.

We could then maintain this costly `<textarea>` sync only when really needed.

atom/browser/browser.cc
if (is_shutdown_)
    return;
  is_shutdown_ = true;
  is_quiting_ = true;
  FOR_EACH_OBSERVER(BrowserObserver, observers_, OnQuit());
  if (base::MessageLoop::current()) {
    base::MessageLoop::current()->PostTask(
        FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
  } else {
    
    exit(0);
  }
}
std::string Browser::GetVersion() const {
  if (version_override_.empty()) {
    std::string version = GetExecutableFileVersion();
    if (!version.empty())
      return version;
  }
  return version_override_;
}
void Browser::SetVersion(const std::string& version) {
  version_override_ = version;
}
std::string Browser::GetName() const {