Remove SkSurfaceProps gamma-correctness flag entirely.

gm/dftext.cpp

Index: gm/dftext.cpp
diff --git a/gm/dftext.cpp b/gm/dftext.cpp
index 8ab2df71bab38cc7a1f1200c603cf9c96ad10d8e..f1b972892ec6a63e49b67dbf5c814c5ee28951ae 100644
--- a/gm/dftext.cpp
+++ b/gm/dftext.cpp
@@ -43,10 +43,7 @@ protected:
         SkISize size = onISize();
         SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(), kPremul_SkAlphaType,
                                                 sk_ref_sp(inputCanvas->imageInfo().colorSpace()));
-        SkSurfaceProps canvasProps(SkSurfaceProps::kLegacyFontHost_InitType);
-        uint32_t gammaCorrect = inputCanvas->getProps(&canvasProps)
-            ? canvasProps.flags() & SkSurfaceProps::kGammaCorrect_Flag : 0;
-        SkSurfaceProps props(SkSurfaceProps::kUseDeviceIndependentFonts_Flag | gammaCorrect,
+        SkSurfaceProps props(SkSurfaceProps::kUseDeviceIndependentFonts_Flag,
                              SkSurfaceProps::kLegacyFontHost_InitType);
         auto surface(SkSurface::MakeRenderTarget(ctx, SkBudgeted::kNo, info, 0, &props));
         SkCanvas* canvas = surface ? surface->getCanvas() : inputCanvas;