Apply paint color to alpha-only textures in drawEdgeAAImageSet

This makes batch texture ops consistent with singleton texture ops, and
images drawn through a texture producer.

Bug: chromium:1102578
Change-Id: I490b20940ef6f1899396b786369271ce7130e8a9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301540
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
(cherry picked from commit 1c66ad940e5cf2a9edfe85b3cda0b112848e26d1)
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/303999
Commit-Queue: Greg Daniel <egdaniel@google.com>
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
7 files changed