remove append_from_srgb()

It's now no different than append(from_srgb).

Bug: skia:7419

Change-Id: I97c59b6987f033ec2f1859db40ca3056b87b370a
Reviewed-on: https://skia-review.googlesource.com/86741
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
diff --git a/bench/SkRasterPipelineBench.cpp b/bench/SkRasterPipelineBench.cpp
index baff258..5ddf43d 100644
--- a/bench/SkRasterPipelineBench.cpp
+++ b/bench/SkRasterPipelineBench.cpp
@@ -42,14 +42,14 @@
 
         SkRasterPipeline_<256> p;
         p.append(SkRasterPipeline::load_8888, &src_ctx);
-        p.append_from_srgb(kUnpremul_SkAlphaType);
+        p.append(SkRasterPipeline::from_srgb);
         p.append(SkRasterPipeline::scale_u8, &mask_ctx);
         p.append(SkRasterPipeline::move_src_dst);
         if (kF16) {
             p.append(SkRasterPipeline::load_f16, &dst_ctx);
         } else {
             p.append(SkRasterPipeline::load_8888, &dst_ctx);
-            p.append_from_srgb(kPremul_SkAlphaType);
+            p.append(SkRasterPipeline::from_srgb);
         }
         p.append(SkRasterPipeline::dstover);
         if (kF16) {