One bleed GM
One bleed GM

The alpha versions are impossible to triage (the bleed is barely
perceptible). Image and bitmap no longer go through separate code
paths in SkGpuDevice so we don't need bitmap variants. Alpha image/
shader interaction is orthogonal to the rest of what's being tested
here and makes triaging even harder.

Change-Id: I85dffa01de0f4f06cb9cbe04fb1d039a8b61416a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/290118
Commit-Queue: Brian Salomon <61fabaaf0876044aeedfd8e351e485c028d69e7b@google.com>
Reviewed-by: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>
Reviewed-by: Michael Ludwig <cb1f3dd24de0f0b611b26bc28bec758a551d9b7d@google.com>

google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia