Add flag to gradients to interpolate colors in premul space. Experimental API to encapsulate the sh…

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 0066942200fe6d3afd23493c62a5b36edd74e4a4..37b49f0d475a22c9eecfb2027649e32e8b475587 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient.cpp
@@ -175,9 +175,9 @@ void SkTwoPointConicalGradient::init() {
 /////////////////////////////////////////////////////////////////////
 
 SkTwoPointConicalGradient::SkTwoPointConicalGradient(
-    const SkPoint& start, SkScalar startRadius,
-    const SkPoint& end, SkScalar endRadius,
-    const Descriptor& desc)
+        const SkPoint& start, SkScalar startRadius,
+        const SkPoint& end, SkScalar endRadius,
+        const Descriptor& desc)
     : SkGradientShaderBase(desc),
     fCenter1(start),
     fCenter2(end),