### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

13.1.7

### What operating system are you using?

Windows

### Operating System Version

Windows 10 version 20H2

### What arch are you using?

x64

### Last Known Working Electron version

12.0.15

### Expected Behavior

Checking `navigator.userAgentData` in Chrome 91 returns an array of brands appropriately. Electron 13/14 do not return anything.

This appears to then become a problem for my situation. I am posting a form with hidden variables to a third-party vendor I work with. This form post ultimately loads an iframe.

Expected: As it does in Chrome 91, load the iframe from this third-party vendor.

### Actual Behavior

A header of "sec-ch-ua" is included in the request to the third-party vendor and it is blank. They are rejecting the post because of an invalid header. I suspect this is because Chrome 13/14 does not make this hint data made available correctly.

I tried loading various sites in Chrome 91 that do load brand names in Electron 13/14 and they are empty if you review `navigator.userAgentData`.

### Testcase Gist URL

_No response_

### Additional Information

_No response_
shell/browser/electron_browser_context.cc
}
  }
#endif
}
void ElectronBrowserContext::SetUserAgent(const std::string& user_agent) {
  user_agent_ = user_agent;
}
base::FilePath ElectronBrowserContext::GetPath() {
  return path_;
}
bool ElectronBrowserContext::IsOffTheRecord() {
  return in_memory_;
}
bool ElectronBrowserContext::CanUseHttpCache() const {
  return use_cache_;
}
int ElectronBrowserContext::GetMaxCacheSize() const {
  return max_cache_size_;
}
content::ResourceContext* ElectronBrowserContext::GetResourceContext() {
  if (!resource_context_)
    resource_context_ = std::make_unique<content::ResourceContext>();
  return resource_context_.get();
}
std::string ElectronBrowserContext::GetMediaDeviceIDSalt() {
  if (!media_device_id_salt_.get())
    media_device_id_salt_ = std::make_unique<MediaDeviceIDSalt>(prefs_.get());
  return media_device_id_salt_->GetSalt();
}
std::unique_ptr<content::ZoomLevelDelegate>