Revert of Patch to remove constant attributes

src/gpu/effects/GrYUVtoRGBEffect.cpp

Index: src/gpu/effects/GrYUVtoRGBEffect.cpp
diff --git a/src/gpu/effects/GrYUVtoRGBEffect.cpp b/src/gpu/effects/GrYUVtoRGBEffect.cpp
index 703c672cfdcd67a07c8c1a3e205b18c2b58aa8e5..f02c1b2295fb1c8b9a528b07c33c1b151394a680 100644
--- a/src/gpu/effects/GrYUVtoRGBEffect.cpp
+++ b/src/gpu/effects/GrYUVtoRGBEffect.cpp
@@ -109,7 +109,7 @@
     virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
         // YUV is opaque
         inout->setToOther(kA_GrColorComponentFlag, 0xFF << GrColor_SHIFT_A,
-                          InvariantOutput::kWillNot_ReadInput);
+                          InvariantOutput::kWill_ReadInput);
     }
 
     GrCoordTransform fCoordTransform;