Delete SK_SUPPORT_LEGACY_GRADIENT_PREMUL-guarded code

The flag has been removed from Chromium.

R=reed@google.com,
TBR=

Change-Id: Ibccada2068d29b019660be46f5f5797331719a57
Reviewed-on: https://skia-review.googlesource.com/5648
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>

1 files changed, 1 insertions, 17 deletions

diff --git a/src/effects/gradients/SkLinearGradient.cpp b/src/effects/gradients/SkLinearGradient.cpp
index c40a8b4d9c..5994fd6d0c 100644
--- a/src/effects/gradients/SkLinearGradient.cpp
+++ b/src/effects/gradients/SkLinearGradient.cpp
@@ -532,39 +532,23 @@ find_backward(const SkLinearGradient::LinearGradientContext::Rec rec[], float ti
 
 template <bool apply_alpha>
 Sk4f pre_bias(const Sk4f& x, const Sk4f& bias) {
-#ifdef SK_SUPPORT_LEGACY_GRADIENT_PREMUL
-    return x + bias;
-#else
     return apply_alpha ? x : x + bias;
-#endif
 }
 
 template <bool apply_alpha>
 Sk4f post_bias(const Sk4f& x, const Sk4f& bias) {
-#ifdef SK_SUPPORT_LEGACY_GRADIENT_PREMUL
-    return x;
-#else
     return apply_alpha ? x + bias : x;
-#endif
 }
 
 template <bool apply_alpha> SkPMColor trunc_from_255(const Sk4f& x, const Sk4f& bias) {
     SkPMColor c;
-
-#ifdef SK_SUPPORT_LEGACY_GRADIENT_PREMUL
-    SkNx_cast<uint8_t>(x).store(&c);
-    if (apply_alpha) {
-        c = SkPreMultiplyARGB(SkGetPackedA32(c), SkGetPackedR32(c),
-                              SkGetPackedG32(c), SkGetPackedB32(c));
-    }
-#else
     Sk4f c4f255 = x;
     if (apply_alpha) {
         const float scale = x[SkPM4f::A] * (1 / 255.f);
         c4f255 *= Sk4f(scale, scale, scale, 1);
     }
     SkNx_cast<uint8_t>(post_bias<apply_alpha>(c4f255, bias)).store(&c);
-#endif
+
     return c;
 }