Remove references to the Image class from gl::Texture and rx::TextureImpl. BUG=angle:681 Change-Id: I83659f47cbe9f22ff5ad0cf54471544bd14775aa Reviewed-on: https://chromium-review.googlesource.com/236690 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Brandon Jones <bajones@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>