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

src/effects/SkLightingImageFilter.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 "SkLightingImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 1008 matching lines @@
     }
     return true;
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #if SK_SUPPORT_GPU
 
 namespace {
-SkPoint3 random_point3(SkMWCRandom* random) {
+SkPoint3 random_point3(SkRandom* random) {
     return SkPoint3(SkScalarToFloat(random->nextSScalar1()),
                     SkScalarToFloat(random->nextSScalar1()),
                     SkScalarToFloat(random->nextSScalar1()));
 }
 
-SkLight* create_random_light(SkMWCRandom* random) {
+SkLight* create_random_light(SkRandom* random) {
     int type = random->nextULessThan(3);
     switch (type) {
         case 0: {
             return SkNEW_ARGS(SkDistantLight, (random_point3(random), random->nextU()));
         }
         case 1: {
             return SkNEW_ARGS(SkPointLight, (random_point3(random), random->nextU()));
         }
         case 2: {
             return SkNEW_ARGS(SkSpotLight, (random_point3(random),
@@ skipping 115 matching lines @@
 }
 
 bool GrDiffuseLightingEffect::onIsEqual(const GrEffect& sBase) const {
     const GrDiffuseLightingEffect& s = CastEffect<GrDiffuseLightingEffect>(sBase);
     return INHERITED::onIsEqual(sBase) &&
             this->kd() == s.kd();
 }
 
 GR_DEFINE_EFFECT_TEST(GrDiffuseLightingEffect);
 
-GrEffectRef* GrDiffuseLightingEffect::TestCreate(SkMWCRandom* random,
+GrEffectRef* GrDiffuseLightingEffect::TestCreate(SkRandom* random,
                                                  GrContext* context,
                                                  const GrDrawTargetCaps&,
                                                  GrTexture* textures[]) {
     SkScalar surfaceScale = random->nextSScalar1();
     SkScalar kd = random->nextUScalar1();
     SkAutoTUnref<SkLight> light(create_random_light(random));
     SkMatrix matrix;
     for (int i = 0; i < 9; i++) {
         matrix[i] = random->nextUScalar1();
     }
@@ skipping 197 matching lines @@
 
 bool GrSpecularLightingEffect::onIsEqual(const GrEffect& sBase) const {
     const GrSpecularLightingEffect& s = CastEffect<GrSpecularLightingEffect>(sBase);
     return INHERITED::onIsEqual(sBase) &&
            this->ks() == s.ks() &&
            this->shininess() == s.shininess();
 }
 
 GR_DEFINE_EFFECT_TEST(GrSpecularLightingEffect);
 
-GrEffectRef* GrSpecularLightingEffect::TestCreate(SkMWCRandom* random,
+GrEffectRef* GrSpecularLightingEffect::TestCreate(SkRandom* random,
                                                   GrContext* context,
                                                   const GrDrawTargetCaps&,
                                                   GrTexture* textures[]) {
     SkScalar surfaceScale = random->nextSScalar1();
     SkScalar ks = random->nextUScalar1();
     SkScalar shininess = random->nextUScalar1();
     SkAutoTUnref<SkLight> light(create_random_light(random));
     SkMatrix matrix;
     for (int i = 0; i < 9; i++) {
         matrix[i] = random->nextUScalar1();
@@ skipping 164 matching lines @@
 
 #endif
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDistantLight)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkPointLight)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpotLight)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END