Gamma-correctness pushed into Skia, top-down.

gm/textblobgeometrychange.cpp

Index: gm/textblobgeometrychange.cpp
diff --git a/gm/textblobgeometrychange.cpp b/gm/textblobgeometrychange.cpp
index 0632908dfbfa8ee2ffb8fffdd001a6e4f6713f78..b1c5b179880663716864060e1d812a58c719fa0f 100644
--- a/gm/textblobgeometrychange.cpp
+++ b/gm/textblobgeometrychange.cpp
@@ -42,8 +42,11 @@ protected:
 
         SkAutoTUnref<const SkTextBlob> blob(builder.build());
 
-        SkImageInfo info = SkImageInfo::MakeN32Premul(200, 200);
-        SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
+        SkImageInfo info = SkImageInfo::MakeN32Premul(200, 200, canvas->imageInfo().profileType());
+        SkSurfaceProps canvasProps(SkSurfaceProps::kLegacyFontHost_InitType);
+        uint32_t allowSRGBInputs = canvas->getProps(&canvasProps)
+            ? canvasProps.flags() & SkSurfaceProps::kAllowSRGBInputs_Flag : 0;
+        SkSurfaceProps props(allowSRGBInputs, kUnknown_SkPixelGeometry);
         auto surface(canvas->makeSurface(info, &props));
         if (surface) {
             SkCanvas* c = surface->getCanvas();