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

tests/ColorTest.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 "Test.h"
 #include "SkColor.h"
 #include "SkColorPriv.h"
@@ skipping 128 matching lines @@
     }
 }
 
 /**
   This test fails: SkFourByteInterp does *not* preserve opaque destinations.
   SkAlpha255To256 implemented as (alpha + 1) is faster than
   (alpha + (alpha >> 7)), but inaccurate, and Skia intends to phase it out.
 */
 /*
 static void test_interp(skiatest::Reporter* reporter) {
-    SkMWCRandom r;
+    SkRandom r;
 
     U8CPU a0 = 0;
     U8CPU a255 = 255;
     for (int i = 0; i < 200; i++) {
         SkColor colorSrc = r.nextU();
         SkColor colorDst = r.nextU();
         SkPMColor src = SkPreMultiplyColor(colorSrc);
         SkPMColor dst = SkPreMultiplyColor(colorDst);
 
         REPORTER_ASSERT(reporter, SkFourByteInterp(src, dst, a0) == dst);
         REPORTER_ASSERT(reporter, SkFourByteInterp(src, dst, a255) == src);
     }
 }
 */
 
 static inline void test_fast_interp(skiatest::Reporter* reporter) {
-    SkMWCRandom r;
+    SkRandom r;
 
     U8CPU a0 = 0;
     U8CPU a255 = 255;
     for (int i = 0; i < 200; i++) {
         SkColor colorSrc = r.nextU();
         SkColor colorDst = r.nextU();
         SkPMColor src = SkPreMultiplyColor(colorSrc);
         SkPMColor dst = SkPreMultiplyColor(colorDst);
 
         REPORTER_ASSERT(reporter, SkFastFourByteInterp(src, dst, a0) == dst);
         REPORTER_ASSERT(reporter, SkFastFourByteInterp(src, dst, a255) == src);
     }
 }
 
 static void TestColor(skiatest::Reporter* reporter) {
     test_premul(reporter);
     //test_interp(reporter);
     test_fast_interp(reporter);
 //    test_565blend();
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("Color", ColorTestClass, TestColor)