Migrate download_protection code to new DM token class.

Migrates RetrieveDMToken calls to use the new BrowserDMToken class.

Bug: 1020296
Change-Id: Icef580e243430d73b6c1c42b273a8540277481d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1904234
Commit-Queue: Dominique Fauteux-Chapleau <domfc@chromium.org>
Reviewed-by: Tien Mai <tienmai@chromium.org>
Reviewed-by: Daniel Rubery <drubery@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714196}
void BinaryUploadService::RunAuthorizationCallbacks() {
  DCHECK(can_upload_data_.has_value());
  for (auto& callback : authorization_callbacks_) {
    std::move(callback).Run(can_upload_data_.value());
  }
  authorization_callbacks_.clear();
}

void BinaryUploadService::RunAuthorizationCallbacks() {
  DCHECK(can_upload_data_.has_value());
  for (auto& callback : authorization_callbacks_) {
    std::move(callback).Run(can_upload_data_.value());
  }
  authorization_callbacks_.clear();
}
