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

src/effects/SkMagnifierImageFilter.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 "SkBitmap.h"
 #include "SkMagnifierImageFilter.h"
 #include "SkColorPriv.h"
@@ skipping 178 matching lines @@
     return GrGLEffectMatrix::GenKey(zoom.getMatrix(),
                                     drawEffect,
                                     zoom.coordsType(),
                                     zoom.texture(0));
 }
 
 /////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_EFFECT_TEST(GrMagnifierEffect);
 
-GrEffectRef* GrMagnifierEffect::TestCreate(SkMWCRandom* random,
+GrEffectRef* GrMagnifierEffect::TestCreate(SkRandom* random,
                                            GrContext* context,
                                            const GrDrawTargetCaps&,
                                            GrTexture** textures) {
     const int kMaxWidth = 200;
     const int kMaxHeight = 200;
     const int kMaxInset = 20;
     uint32_t width = random->nextULessThan(kMaxWidth);
     uint32_t height = random->nextULessThan(kMaxHeight);
     uint32_t x = random->nextULessThan(kMaxWidth - width);
     uint32_t y = random->nextULessThan(kMaxHeight - height);
@@ skipping 132 matching lines @@
 
             int x_val = SkMin32(SkScalarFloorToInt(x_interp), width - 1);
             int y_val = SkMin32(SkScalarFloorToInt(y_interp), height - 1);
 
             *dptr = sptr[y_val * width + x_val];
             dptr++;
         }
     }
     return true;
 }