The "?limit=" param is only supported by EmailProvider, so don't add
it to other URIs.
Doing so causes a permission error when opening an EML attachment on gmail,
because we're granted the permission only to the passed URI, but not to
the URI with the "?limit=" param.
Bug 3371630
Change-Id: I88fff88a7e48e5bc958124eedec3e592978a40c7