* Electron version: 1.8.2
* Operating system: macos 10.13.3

Reproducing repo: https://github.com/ibash/electron-webkit-app-drag

Demonstrates a bug where `-webkit-app-region: drag` causes a browser view in front of it to miss click events. Oddly - it does not prevent hover events.

Steps:
1. Clone https://github.com/ibash/electron-webkit-app-drag, `yarn install`, `yarn start`
2. Click "button1"
3. Click "button2"

Expected:

Clicking button1 or button2 pops up an alert: "button clicked!"

Actual:

Only clicking button2 pops up an alert: "button clicked!"

atom/browser/api/atom_api_browser_window.cc
window_unresponsive_closure_.Cancel();
  Emit("responsive");
}
void BrowserWindow::WillCloseWindow(bool* prevent_default) {
  *prevent_default = Emit("close");
}
void BrowserWindow::RequestPreferredWidth(int* width) {
  *width = web_contents()->GetPreferredSize().width();
}
void BrowserWindow::OnCloseButtonClicked(bool* prevent_default) {
  
  
  
  *prevent_default = true;
  
  
  
  
  if (window_unresponsive_closure_.IsCancelled())
    ScheduleUnresponsiveEvent(5000);
  if (!web_contents())
    
    return;
  if (web_contents()->NeedToFireBeforeUnload())
    web_contents()->DispatchBeforeUnload();
  else
    web_contents()->Close();
}
void BrowserWindow::OnWindowClosed() {