Change old PRG to be SkLCGRandom; change new one to SkRandom

samplecode/SampleClip.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 "SkColorPriv.h"
 #include "SkDevice.h"
 #include "SkPaint.h"
 #include "SkRandom.h"
 
 #define W   150
 #define H   200
 
 static void show_text(SkCanvas* canvas, bool doAA) {
-    SkMWCRandom rand;
+    SkRandom rand;
     SkPaint paint;
     paint.setAntiAlias(doAA);
     paint.setLCDRenderText(true);
     paint.setTextSize(SkIntToScalar(20));
 
     for (int i = 0; i < 200; ++i) {
         paint.setColor((SK_A32_MASK << SK_A32_SHIFT) | rand.nextU());
         canvas->drawText("Hamburgefons", 12,
                          rand.nextSScalar1() * W, rand.nextSScalar1() * H + 20,
                          paint);
     }
 }
 
 static void show_fill(SkCanvas* canvas, bool doAA) {
-    SkMWCRandom rand;
+    SkRandom rand;
     SkPaint paint;
     paint.setAntiAlias(doAA);
 
     for (int i = 0; i < 50; ++i) {
         SkRect r;
         SkPath p;
 
         r.setXYWH(rand.nextSScalar1() * W, rand.nextSScalar1() * H,
                   rand.nextUScalar1() * W, rand.nextUScalar1() * H);
         paint.setColor(rand.nextU());
         canvas->drawRect(r, paint);
 
         r.setXYWH(rand.nextSScalar1() * W, rand.nextSScalar1() * H,
                   rand.nextUScalar1() * W, rand.nextUScalar1() * H);
         paint.setColor(rand.nextU());
         p.addOval(r);
         canvas->drawPath(p, paint);
     }
 }
 
-static SkScalar randRange(SkMWCRandom& rand, SkScalar min, SkScalar max) {
+static SkScalar randRange(SkRandom& rand, SkScalar min, SkScalar max) {
     SkASSERT(min <= max);
     return min + SkScalarMul(rand.nextUScalar1(), max - min);
 }
 
 static void show_stroke(SkCanvas* canvas, bool doAA, SkScalar strokeWidth, int n) {
-    SkMWCRandom rand;
+    SkRandom rand;
     SkPaint paint;
     paint.setAntiAlias(doAA);
     paint.setStyle(SkPaint::kStroke_Style);
     paint.setStrokeWidth(strokeWidth);
 
     for (int i = 0; i < n; ++i) {
         SkRect r;
         SkPath p;
 
         r.setXYWH(rand.nextSScalar1() * W, rand.nextSScalar1() * H,
@@ skipping 82 matching lines @@
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new ClipView; }
 static SkViewRegister reg(MyFactory);