Vulkan: Add operator<< for descriptorSet for debugging Right now it is using streamOut() function which is hard to use with WARN(). This replaces the streamOut function with standard c++ operator<< so that we can use in WARN()/INFO() along with other logs for debugging. Bug: b/368566032 Change-Id: Iec98b4c59f360cbbfb8fbdd85d5d1150fcca8f4a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5908773 Reviewed-by: Yuxin Hu <yuxinhu@google.com> Commit-Queue: Charlie Lao <cclao@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>