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

src/effects/SkMatrixConvolutionImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMatrixConvolutionImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 512 matching lines @@
            fTileMode == s.tileMode() &&
            fConvolveAlpha == s.convolveAlpha();
 }
 
 GR_DEFINE_EFFECT_TEST(GrMatrixConvolutionEffect);
 
 // A little bit less than the minimum # uniforms required by DX9SM2 (32).
 // Allows for a 5x5 kernel (or 25x1, for that matter).
 #define MAX_KERNEL_SIZE 25
 
-GrEffectRef* GrMatrixConvolutionEffect::TestCreate(SkMWCRandom* random,
+GrEffectRef* GrMatrixConvolutionEffect::TestCreate(SkRandom* random,
                                                    GrContext* context,
                                                    const GrDrawTargetCaps&,
                                                    GrTexture* textures[]) {
     int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
                                       GrEffectUnitTest::kAlphaTextureIdx;
     int width = random->nextRangeU(1, MAX_KERNEL_SIZE);
     int height = random->nextRangeU(1, MAX_KERNEL_SIZE / width);
     SkISize kernelSize = SkISize::Make(width, height);
     SkAutoTDeleteArray<SkScalar> kernel(new SkScalar[width * height]);
     for (int i = 0; i < width * height; i++) {
@@ skipping 29 matching lines @@
                                                 fBias,
                                                 fTarget,
                                                 fTileMode,
                                                 fConvolveAlpha);
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #endif