- Electron version: 1.4.0
- Operating system: OS X 10.10.5

I've been using the following code to send Tab key events to a webview in my project:

``` js
const webContents = webView.getWebContents();
const keyEvent = {
  type: 'keyDown',
  keyCode: 'Tab'
};

webContents.sendInputEvent(keyEvent);
```

I have had no issues with this until the recent update to 1.4.0.

The last version the above code works in OS X is **1.3.7**. I've tried this with the latest versions of Electron (1.4.1 & 1.4.2) with the same results.

Am I doing something wrong here? Is this a known issue?

atom/common/native_mate_converters/blink_converter.cc
v8::Isolate* isolate,
      const blink::WebContextMenuData::InputFieldType& in) {
  switch (in) {
    case blink::WebContextMenuData::InputFieldTypePlainText:
      return mate::StringToV8(isolate, "plainText");
    case blink::WebContextMenuData::InputFieldTypePassword:
      return mate::StringToV8(isolate, "password");
    case blink::WebContextMenuData::InputFieldTypeOther:
      return mate::StringToV8(isolate, "other");
    default:
      return mate::StringToV8(isolate, "none");
  }
}
v8::Local<v8::Value> EditFlagsToV8(v8::Isolate* isolate, int editFlags) {