Add fallback path for drawing unsupported bitmap configs

Just converts to RGBA_8888 before uploading.

Bug: skia:8375
Change-Id: I7e323da51debb4950c17049ed3b4822a202cba73
Reviewed-on: https://skia-review.googlesource.com/154180
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed