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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
bool is_rtl) {
  int leftmost_display_x = left_display.bounds().x();
  int rightmost_display_x =
      right_display.GetSizeInPixel().width() + right_display.bounds().x();
  
  
  int right_growth_start = std::max(
      leftmost_display_x, std::min(rightmost_display_x, element_bounds.x()));
  int left_growth_end =
      std::max(leftmost_display_x,
               std::min(rightmost_display_x, element_bounds.right()));
  int right_available = rightmost_display_x - right_growth_start;
  int left_available = left_growth_end - leftmost_display_x;
  int popup_width =
      std::min(popup_required_width, std::max(right_available, left_available));
  std::pair<int, int> grow_right(right_growth_start, popup_width);
  std::pair<int, int> grow_left(left_growth_end - popup_width, popup_width);
  
  
  
  if (is_rtl) {
    return left_available >= popup_width || left_available >= right_available
               ? grow_left
               : grow_right;
  }
  return right_available >= popup_width || right_available >= left_available
             ? grow_right
             : grow_left;
}
std::pair<int, int> CalculatePopupYAndHeight(