Add test for proactive proxy-creation failure

This is a follow up to https://skia-review.googlesource.com/c/7828/ (Add more pre-checks to surfaceProxy creation)

BUG=687174

Change-Id: I97385afbdaf1881b806ee37737020564e3f4d444
Reviewed-on: https://skia-review.googlesource.com/7864
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
2 files changed