Revert "update SkColor4f::FromColor() to preserve transfer function"

This reverts commit 9e229233a67b36a508d3c753a5b93a022369c5f7.

Reason for revert: See if blocking Android roll

Original change's description:
> update SkColor4f::FromColor() to preserve transfer function
> 
> This kills off some sRGB tables,
> and lots of call sites can now use SkColor4f::FromColor().
> 
> It doesn't seem important to keep this test.
> 
> Change-Id: Ia79ec8ace45e80bbc7a1e33f560f59289e61b2fb
> Reviewed-on: https://skia-review.googlesource.com/141046
> Commit-Queue: Mike Klein <mtklein@chromium.org>
> Reviewed-by: Brian Osman <brianosman@google.com>

TBR=mtklein@chromium.org,brianosman@google.com

Change-Id: I9d76e4ccf8a101853a7404abb33bdab9e0c64c25
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/141181
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/shaders/SkImageShader.cpp b/src/shaders/SkImageShader.cpp
index b770d64c5f..22c3f95c04 100644
--- a/src/shaders/SkImageShader.cpp
+++ b/src/shaders/SkImageShader.cpp
@@ -315,8 +315,8 @@ bool SkImageShader::onAppendStages(const StageRec& rec) const {
         SkColor4f paint_color;
     };
     auto misc = alloc->make<MiscCtx>();
-    misc->state       = std::move(state);  // Extend lifetime to match the pipeline's.
-    misc->paint_color = SkColor4f::FromColor(rec.fPaint.getColor());
+    misc->state = std::move(state);  // Extend lifetime to match the pipeline's.
+    swizzle_rb(Sk4f_fromL32(rec.fPaint.getColor())).store(misc->paint_color.vec());  // sRGBA floats
     p->append_matrix(alloc, matrix);
 
     auto gather = alloc->make<SkJumper_GatherCtx>();