use Descriptor struct to encapsulate all the common paramaeters between our various gradient types.…

src/effects/gradients/SkTwoPointConicalGradient.cpp

Index: src/effects/gradients/SkTwoPointConicalGradient.cpp
diff --git a/src/effects/gradients/SkTwoPointConicalGradient.cpp b/src/effects/gradients/SkTwoPointConicalGradient.cpp
index abd974b6fab0642dbb241d1c77d64fac8247729f..0066942200fe6d3afd23493c62a5b36edd74e4a4 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient.cpp
@@ -177,10 +177,8 @@ void SkTwoPointConicalGradient::init() {
 SkTwoPointConicalGradient::SkTwoPointConicalGradient(
     const SkPoint& start, SkScalar startRadius,
     const SkPoint& end, SkScalar endRadius,
-    const SkColor colors[], const SkScalar pos[],
-    int colorCount, SkShader::TileMode mode,
-    SkUnitMapper* mapper)
-    : SkGradientShaderBase(colors, pos, colorCount, mode, mapper),
+    const Descriptor& desc)
+    : SkGradientShaderBase(desc),
     fCenter1(start),
     fCenter2(end),
     fRadius1(startRadius),