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# Description

* Electron version: 1.8.4
* Operating system: Windows 10

Calling `webContents.sendInputEvent` with type as `"char"` to a document containing a webview is rendered offscreen and an input panel is focused

<!-- What do you think should happen? -->

# Expected result

Keyboard input should be placed into the input panel

<!-- What actually happens? -->

# Actual result

Electron crashes

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# Repro steps

[I have a repo set up that will demonstrate the issue.](https://github.com/ImOnALampshade/electron-webview-char-crash) Clone that to see. Read the readme in that for more information.

```bash
git clone https://github.com/ImOnALampshade/electron-webview-char-crash.git
npm install
npm start
```
atom/browser/api/atom_api_web_contents.cc
bool handled = true;
  IPC_BEGIN_MESSAGE_MAP(WebContents, message)
    IPC_MESSAGE_HANDLER_CODE(ViewHostMsg_SetCursor, OnCursorChange,
                             handled = false)
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()
  return handled;
}
bool WebContents::OnMessageReceived(const IPC::Message& message,
                                    content::RenderFrameHost* frame_host) {
  bool handled = true;
  FrameDispatchHelper helper = {this, frame_host};
  IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(WebContents, message, frame_host)
    IPC_MESSAGE_HANDLER(AtomFrameHostMsg_Message, OnRendererMessage)
    IPC_MESSAGE_FORWARD_DELAY_REPLY(AtomFrameHostMsg_Message_Sync, &helper,
                                    FrameDispatchHelper::OnRendererMessageSync)
    IPC_MESSAGE_FORWARD_DELAY_REPLY(
        AtomFrameHostMsg_SetTemporaryZoomLevel, &helper,
        FrameDispatchHelper::OnSetTemporaryZoomLevel)
    IPC_MESSAGE_FORWARD_DELAY_REPLY(AtomFrameHostMsg_GetZoomLevel, &helper,
                                    FrameDispatchHelper::OnGetZoomLevel)
#if defined(TOOLKIT_VIEWS) && !defined(OS_MACOSX)
    IPC_MESSAGE_HANDLER(AtomAutofillFrameHostMsg_ShowPopup, ShowAutofillPopup)
    IPC_MESSAGE_HANDLER(AtomAutofillFrameHostMsg_HidePopup, HideAutofillPopup)
#endif
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()
  return handled;
}
void WebContents::WebContentsDestroyed() {