Add samples to Viewer.

samplecode/ClockFaceView.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
 #include "SkReadBuffer.h"
@@ skipping 54 matching lines @@
 
 #include "Sk2DPathEffect.h"
 
 class Dot2DPathEffect : public Sk2DPathEffect {
 public:
     Dot2DPathEffect(SkScalar radius, const SkMatrix& matrix,
                     SkTDArray<SkPoint>* pts)
     : Sk2DPathEffect(matrix), fRadius(radius), fPts(pts) {}
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Dot2DPathEffect)
-
+    class Registrar {
+    public:
+        Registrar() {
+            SkFlattenable::Register("Dot2DPathEffect",
+                                    Dot2DPathEffect::CreateProc,
+                                    Dot2DPathEffect::GetFlattenableType());
+        }
+    };
 protected:
     void begin(const SkIRect& uvBounds, SkPath* dst) const override {
         if (fPts) {
             fPts->reset();
         }
         this->INHERITED::begin(uvBounds, dst);
     }
 
     virtual void next(const SkPoint& loc, int u, int v,
                       SkPath* dst) const override {
         if (fPts) {
             *fPts->append() = loc;
         }
         dst->addCircle(loc.fX, loc.fY, fRadius);
     }
 
     void flatten(SkWriteBuffer& buffer) const override {
         buffer.writeMatrix(this->getMatrix());
         buffer.writeScalar(fRadius);
     }
 
 private:
     SkScalar fRadius;
     SkTDArray<SkPoint>* fPts;
 
     typedef Sk2DPathEffect INHERITED;
 };
 
+static Dot2DPathEffect::Registrar gReg0;
+
 sk_sp<SkFlattenable> Dot2DPathEffect::CreateProc(SkReadBuffer& buffer) {
     SkMatrix matrix;
     buffer.readMatrix(&matrix);
     return sk_make_sp<Dot2DPathEffect>(buffer.readScalar(), matrix, nullptr);
 }
 
 class InverseFillPE : public SkPathEffect {
 public:
     InverseFillPE() {}
     virtual bool filterPath(SkPath* dst, const SkPath& src,
@@ skipping 133 matching lines @@
     }
 
 private:
     typedef SkView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new ClockFaceView; }
 static SkViewRegister reg(MyFactory);