Make gpuSetup draw a error message on failure

Since gpuSetup can preempt draw's execution it needs to draw the error message too.

This is pulled out of the gpuSetup refactoring.

Change-Id: Iafe06d924fc1b694c59aa3100e9fbe95c4773222
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/299140
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
5 files changed