Raise exceptions from child threads to the main thread

Bug: skia:7883
Change-Id: Ia71550b94867588c124e93eac347c67e35aa48e8
Reviewed-on: https://skia-review.googlesource.com/124380
Auto-Submit: Yuqian Li <liyuqian@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
1 file changed