Eliminate some clutter in SkFlattenable

include/effects/SkLayerDrawLooper.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLayerDrawLooper_DEFINED
 #define SkLayerDrawLooper_DEFINED
 
@@ skipping 76 matching lines @@
 
     void flatten(SkWriteBuffer&) const override;
 
 private:
     struct Rec {
         Rec*    fNext;
         SkPaint fPaint;
         LayerInfo fInfo;
     };
     Rec*    fRecs;
-    Rec*    fTopRec;
     int     fCount;
 
     // state-machine during the init/next cycle
     class LayerDrawLooperContext : public SkDrawLooper::Context {
     public:
         explicit LayerDrawLooperContext(const SkLayerDrawLooper* looper);
 
     protected:
         bool next(SkCanvas*, SkPaint* paint) override;
 
     private:
         Rec* fCurrRec;
 
         static void ApplyInfo(SkPaint* dst, const SkPaint& src, const LayerInfo&);
     };
 
-    class MyRegistrar : public SkFlattenable::Registrar {
-    public:
-        MyRegistrar();
-    };
-
     typedef SkDrawLooper INHERITED;
 
 public:
     class SK_API Builder {
     public:
         Builder();
         ~Builder();
 
         /**
          *  Call for each layer you want to add (from top to bottom).
@@ skipping 22 matching lines @@
         SkLayerDrawLooper* detachLooper();
 
     private:
         Rec* fRecs;
         Rec* fTopRec;
         int  fCount;
     };
 };
 
 #endif