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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/ui/autofill_popup.cc
const display::Display& top_display,
    const display::Display& bottom_display,
    int popup_required_height,
    const gfx::Rect& element_bounds) {
  int topmost_display_y = top_display.bounds().y();
  int bottommost_display_y =
      bottom_display.GetSizeInPixel().height() + bottom_display.bounds().y();
  
  
  int top_growth_end = std::max(
      topmost_display_y, std::min(bottommost_display_y, element_bounds.y()));
  int bottom_growth_start =
      std::max(topmost_display_y,
               std::min(bottommost_display_y, element_bounds.bottom()));
  int top_available = bottom_growth_start - topmost_display_y;
  int bottom_available = bottommost_display_y - top_growth_end;
  
  if (bottom_available >= popup_required_height ||
      bottom_available >= top_available) {
    
    return std::make_pair(bottom_growth_start, popup_required_height);
  } else {
    
    return std::make_pair(top_growth_end - popup_required_height,
                          popup_required_height);
  }
}
display::Display GetDisplayNearestPoint(const gfx::Point& point) {