Create helper functions to use in computeInvariantOutput calls

src/effects/SkTableColorFilter.cpp

Index: src/effects/SkTableColorFilter.cpp
diff --git a/src/effects/SkTableColorFilter.cpp b/src/effects/SkTableColorFilter.cpp
index b0e61cad56ba806c33460bbb7b4e5ff127f2ad2e..487968b703511c0b0334e48948a1045ce60c854c 100644
--- a/src/effects/SkTableColorFilter.cpp
+++ b/src/effects/SkTableColorFilter.cpp
@@ -404,19 +404,20 @@ bool ColorTableEffect::onIsEqual(const GrProcessor& sBase) const {
 void ColorTableEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
     // If we kept the table in the effect then we could actually run known inputs through the
     // table.
+    uint8_t invalidateFlags = 0;
     if (fFlags & SkTable_ColorFilter::kR_Flag) {
-        inout->fValidFlags &= ~kR_GrColorComponentFlag;
+        invalidateFlags |= kR_GrColorComponentFlag;
     }
     if (fFlags & SkTable_ColorFilter::kG_Flag) {
-        inout->fValidFlags &= ~kG_GrColorComponentFlag;
+        invalidateFlags |= kG_GrColorComponentFlag;
     }
     if (fFlags & SkTable_ColorFilter::kB_Flag) {
-        inout->fValidFlags &= ~kB_GrColorComponentFlag;
+        invalidateFlags |= kB_GrColorComponentFlag;
     }
     if (fFlags & SkTable_ColorFilter::kA_Flag) {
-        inout->fValidFlags &= ~kA_GrColorComponentFlag;
+        invalidateFlags |= kA_GrColorComponentFlag;
     }
-    inout->fIsSingleComponent = false;
+    inout->invalidateComponents(invalidateFlags);
 }
 
 ///////////////////////////////////////////////////////////////////////////////