Add abandoned GPU check to createTextureProxy

I'm guessing the crash is actually on the first 'fGpu' reference in createTextureProxy after the GPU context has been abandoned.

Bug: 712929
Change-Id: Ia6742da7073c2320e592b42fcf2d0e7c04eeefb9
Reviewed-on: https://skia-review.googlesource.com/13966
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed