Add a test for generateMipmap after modify To make sure TextureVk::syncState is called before generateMipmap. Bug: angleproject:4551 Change-Id: Ibce0738b72fc81270e07617f04ffee57f1c8ed20 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2248209 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com>