In GrContext::readSurfacePixels fail gracefully if temp pixmap allocation
fails.

Bug: chromium:860399
Change-Id: I6793e7fe7e97b7848d40170046dcff4c2fcc48c7
Reviewed-on: https://skia-review.googlesource.com/141101
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: Brian Salomon <bsalomon@google.com>
1 file changed