* Electron version: latest
* Operating system: MacOS

The TouchBar API (and MacOS in general) let's you pass an `imageNamed` param to NSImage to get the default OS image. For example: `[NSImage imageNamed:@"NSTouchBarGoUpTemplate"];` creates an NSImage with the default up chevron icon on MacOS. 

It would be pretty neat-o to allow TouchBar users to do something like this: 

```javascript
new TouchBarButton({
  icon: nativeImage.createFromMacOSNamedImage('NSTouchBarGoUpTemplate')
})
```

...and maybe that would just no-op with `nativeImage.createEmpty()` on non-MacOS platforms. 

I guess this is really bigger than just TouchBar because this API could benefit `Menu` for example as well, or anywhere else where you use `nativeImage`. 


atom/common/api/atom_api_native_image.cc
if (!path.ReferencesParent()) {
    return path;
  }
  base::FilePath absolute_path = MakeAbsoluteFilePath(path);
  
  if (absolute_path.empty()) {
    return path;
  } else {
    return absolute_path;
  }
}
#if defined(OS_MACOSX)
bool IsTemplateFilename(const base::FilePath& path) {
  return (base::MatchPattern(path.value(), "*Template.*") ||
          base::MatchPattern(path.value(), "*Template@*x.*"));
}
#endif
#if defined(OS_WIN)
base::win::ScopedHICON ReadICOFromPath(int size, const base::FilePath& path) {