Use ImageIndex as a parameter to TextureD3D::setImage. This will allow us to call the TexureStorage::setData easily. BUG=angle:729 Change-Id: I16ada583894c8c427c78de5050f7f462c96d1fd1 Reviewed-on: https://chromium-review.googlesource.com/221492 Reviewed-by: Brandon Jones <bajones@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>