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

src/effects/SkMorphologyImageFilter.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 "SkMorphologyImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 409 matching lines @@
 void GrMorphologyEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     // This is valid because the color components of the result of the kernel all come
     // exactly from existing values in the source texture.
     this->updateConstantColorComponentsForModulation(color, validFlags);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_EFFECT_TEST(GrMorphologyEffect);
 
-GrEffectRef* GrMorphologyEffect::TestCreate(SkMWCRandom* random,
+GrEffectRef* GrMorphologyEffect::TestCreate(SkRandom* random,
                                             GrContext*,
                                             const GrDrawTargetCaps&,
                                             GrTexture* textures[]) {
     int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
                                       GrEffectUnitTest::kAlphaTextureIdx;
     Direction dir = random->nextBool() ? kX_Direction : kY_Direction;
     static const int kMaxRadius = 10;
     int radius = random->nextRangeU(1, kMaxRadius);
     MorphologyType type = random->nextBool() ? GrMorphologyEffect::kErode_MorphologyType :
                                                GrMorphologyEffect::kDilate_MorphologyType;
@@ skipping 82 matching lines @@
     }
     GrTexture* input = inputBM.getTexture();
     SkIRect bounds;
     src.getBounds(&bounds);
     SkAutoTUnref<GrTexture> resultTex(apply_morphology(input, bounds,
         GrMorphologyEffect::kErode_MorphologyType, radius()));
     return SkImageFilterUtils::WrapTexture(resultTex, src.width(), src.height(), result);
 }
 
 #endif