remove dead code from SkColorMatrixFilter

include/effects/SkColorMatrixFilter.h

Index: include/effects/SkColorMatrixFilter.h
diff --git a/include/effects/SkColorMatrixFilter.h b/include/effects/SkColorMatrixFilter.h
index 057e5cc3256a5bf72ecaf02e794e37fa48a6c962..851a6e900298dc7618aba2ebe5a582c0d81f5b53 100644
--- a/include/effects/SkColorMatrixFilter.h
+++ b/include/effects/SkColorMatrixFilter.h
@@ -29,11 +29,6 @@ public:
     const GrFragmentProcessor* asFragmentProcessor(GrContext*) const override;
 #endif
 
-    struct State {
-        int32_t fArray[20];
-        int     fShift;
-    };
-
     SK_TO_STRING_OVERRIDE()
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorMatrixFilter)
@@ -46,13 +41,7 @@ protected:
 private:
     SkColorMatrix   fMatrix;
     float           fTranspose[SkColorMatrix::kCount]; // for Sk4s
-
-    typedef void (*Proc)(const State&, unsigned r, unsigned g, unsigned b,
-                         unsigned a, int32_t result[4]);
-
-    Proc        fProc;
-    State       fState;
-    uint32_t    fFlags;
+    uint32_t        fFlags;
 
     void initState(const SkScalar array[20]);