Remove GP from drawstate, revision of invariant output for GP

src/effects/gradients/SkGradientShader.cpp

Index: src/effects/gradients/SkGradientShader.cpp
diff --git a/src/effects/gradients/SkGradientShader.cpp b/src/effects/gradients/SkGradientShader.cpp
index dce079e9aebf29d564574414e11d0b36f736ee25..77accdcc74635f6d98464fda403a6168215407b3 100644
--- a/src/effects/gradients/SkGradientShader.cpp
+++ b/src/effects/gradients/SkGradientShader.cpp
@@ -1156,9 +1156,9 @@ bool GrGradientEffect::onIsEqual(const GrFragmentProcessor& processor) const {
 
 void GrGradientEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
     if (fIsOpaque) {
-        inout->mulByUnknownOpaqueColor();
+        inout->mulByUnknownOpaqueFourComponents();
     } else {
-        inout->mulByUnknownColor();
+        inout->mulByUnknownFourComponents();
     }
 }