Remove unused (by clients) SkUnitMapper (https://codereview.chromium.org/283273002/)

samplecode/SampleVertices.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"
@@ skipping 29 matching lines @@
 
     return SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode,
                                             SkShader::kRepeat_TileMode);
 }
 
 static SkShader* make_shader1(const SkIPoint& size) {
     SkPoint pts[] = { { 0, 0 },
                       { SkIntToScalar(size.fX), SkIntToScalar(size.fY) } };
     SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorRED };
     return SkGradientShader::CreateLinear(pts, colors, NULL,
-                    SK_ARRAY_COUNT(colors), SkShader::kMirror_TileMode, NULL);
+                    SK_ARRAY_COUNT(colors), SkShader::kMirror_TileMode);
 }
 
 class VerticesView : public SampleView {
     SkShader*   fShader0;
     SkShader*   fShader1;
 
 public:
     VerticesView() {
         SkIPoint    size;
 
@@ skipping 162 matching lines @@
 
     Rec fRecs[3];
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new VerticesView; }
 static SkViewRegister reg(MyFactory);