bool ElectronPermissionManager::CheckDevicePermission()

in shell/browser/electron_permission_manager.cc [299:372]
70 lines of code
16 McCabe index (conditional complexity)

bool ElectronPermissionManager::CheckDevicePermission(
    content::PermissionType permission,
    const url::Origin& origin,
    const base::Value* device,
    content::RenderFrameHost* render_frame_host) const {
  auto* web_contents =
      content::WebContents::FromRenderFrameHost(render_frame_host);
  api::WebContents* api_web_contents = api::WebContents::From(web_contents);
  if (device_permission_handler_.is_null()) {
    if (api_web_contents) {
      std::vector<base::Value> granted_devices =
          api_web_contents->GetGrantedDevices(origin, permission,
                                              render_frame_host);

      for (const auto& granted_device : granted_devices) {
        if (permission ==
            static_cast<content::PermissionType>(
                WebContentsPermissionHelper::PermissionType::HID)) {
          if (device->FindIntKey(kHidVendorIdKey) !=
                  granted_device.FindIntKey(kHidVendorIdKey) ||
              device->FindIntKey(kHidProductIdKey) !=
                  granted_device.FindIntKey(kHidProductIdKey)) {
            continue;
          }

          const auto* serial_number =
              granted_device.FindStringKey(kHidSerialNumberKey);
          const auto* device_serial_number =
              device->FindStringKey(kHidSerialNumberKey);

          if (serial_number && device_serial_number &&
              *device_serial_number == *serial_number)
            return true;
        } else if (permission ==
                   static_cast<content::PermissionType>(
                       WebContentsPermissionHelper::PermissionType::SERIAL)) {
#if defined(OS_WIN)
          if (device->FindStringKey(kDeviceInstanceIdKey) ==
              granted_device.FindStringKey(kDeviceInstanceIdKey))
            return true;
#else
          if (device->FindIntKey(kVendorIdKey) !=
                  granted_device.FindIntKey(kVendorIdKey) ||
              device->FindIntKey(kProductIdKey) !=
                  granted_device.FindIntKey(kProductIdKey) ||
              *device->FindStringKey(kSerialNumberKey) !=
                  *granted_device.FindStringKey(kSerialNumberKey)) {
            continue;
          }

#if defined(OS_MAC)
          if (*device->FindStringKey(kUsbDriverKey) !=
              *granted_device.FindStringKey(kUsbDriverKey)) {
            continue;
          }
#endif  // defined(OS_MAC)
          return true;
#endif  // defined(OS_WIN)
        }
      }
    }
    return false;
  } else {
    v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
    v8::HandleScope scope(isolate);
    v8::Local<v8::Object> details = gin::DataObjectBuilder(isolate)
                                        .Set("deviceType", permission)
                                        .Set("origin", origin.Serialize())
                                        .Set("device", device->Clone())
                                        .Set("frame", render_frame_host)
                                        .Build();
    return device_permission_handler_.Run(details);
  }
}