Vulkan: Add mRenderer to ShareGroupVk class For convenience, instead of passing renderer to shareGroupVk's API, keep mRenderer in SharGroupVk class at constructor call. Bug: angleproject:372268711 Change-Id: I9534f7dbe24121856221b89ccf8fc6a353bbb0cc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6022548 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Charlie Lao <cclao@google.com> Reviewed-by: Yuxin Hu <yuxinhu@google.com>