Even though VK_EXT_queue_family_foreign is required by
VK_ANDROID_external_memory_android_hardware_buffer,
Pixel 2 PQ2A.190205.002 supports the latter but not the former.

Also print the names of unsupported extensions to ease debugging in the future.

Bug: angleproject:3121, chromium:857138

Change-Id: Ib1195153cfb74f079a93ee9ce93b9b78e6f6e00a
Reviewed-on: https://chromium-review.googlesource.com/c/1493114Reviewed-by: Jamie Madill <jmadill@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>