* Electron Version: 3.0.0-beta.1 ~ 3.0.0-beta.6
* Operating System (Platform and Version): Ubuntu 16.04.2 LTS
* Last known working Electron version: versions before 3.0.0-beta.1

**Expected Behavior**
Console prints out `time to print stuff` when `Ctrl+P` is pressed.
```
const {Menu, MenuItem} = require('electron')
const menu = new Menu()
  
app.on('ready', () => {
  createWindow()
  menu.append(new MenuItem({
    label: 'Print',
    accelerator: 'CmdOrCtrl+P',
    click: () => { console.log('time to print stuff') }
  }))
  Menu.setApplicationMenu(menu)
})
```
https://github.com/hackjutsu/electron-quick-start/commit/6ceb5d7dcd2d946c071b43a3fdd1b0434ddebff5
**Actual behavior**
No output. The accelerator event is not triggered.

**To Reproduce**
```sh
git clone https://github.com/hackjutsu/electron-quick-start
cd electron-quick-start
npm install
npm run start
```
Try pressing `Ctrl+P`, and observe the output. (nothing happen...)
Change the electron version back to 2.0.0 in `pakcage.json`
```sh
npm install
npm run start
```
Try pressing `Ctrl+P`, and observe the output. (the log `time to print stuff` will show up in console)

atom/browser/ui/views/root_view.cc
View* last_focused_view = last_focused_view_tracker_->view();
  if (last_focused_view) {
    GetFocusManager()->SetFocusedViewWithReason(
        last_focused_view, views::FocusManager::kReasonFocusRestore);
  }
  if (menu_bar_autohide_)
    SetMenuBarVisibility(false);
}
void RootView::ResetAltState() {
  menu_bar_alt_pressed_ = false;
}
void RootView::Layout() {
  if (!window_->content_view())  
    return;
  const auto menu_bar_bounds =
      menu_bar_visible_ ? gfx::Rect(0, 0, size().width(), kMenuBarHeight)
                        : gfx::Rect();
  if (menu_bar_)
    menu_bar_->SetBoundsRect(menu_bar_bounds);
  window_->content_view()->SetBoundsRect(
      gfx::Rect(0, menu_bar_bounds.height(), size().width(),
                size().height() - menu_bar_bounds.height()));
}
gfx::Size RootView::GetMinimumSize() const {