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

src/effects/gradients/SkGradientShaderPriv.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGradientShaderPriv_DEFINED
 #define SkGradientShaderPriv_DEFINED
 
@@ skipping 243 matching lines @@
 protected:
 
     /** Populates a pair of arrays with colors and stop info to construct a random gradient.
         The function decides whether stop values should be used or not. The return value indicates
         the number of colors, which will be capped by kMaxRandomGradientColors. colors should be
         sized to be at least kMaxRandomGradientColors. stops is a pointer to an array of at least
         size kMaxRandomGradientColors. It may be updated to NULL, indicating that NULL should be
         passed to the gradient factory rather than the array.
     */
     static const int kMaxRandomGradientColors = 4;
-    static int RandomGradientParams(SkMWCRandom* r,
+    static int RandomGradientParams(SkRandom* r,
                                     SkColor colors[kMaxRandomGradientColors],
                                     SkScalar** stops,
                                     SkShader::TileMode* tm);
 
     virtual bool onIsEqual(const GrEffect& effect) const SK_OVERRIDE;
 
 private:
 
     GrTextureAccess fTextureAccess;
     SkScalar fYCoord;
@@ skipping 65 matching lines @@
     SkScalar fCachedYCoord;
     GrGLUniformManager::UniformHandle fFSYUni;
     GrGLEffectMatrix fEffectMatrix;
 
     typedef GrGLEffect INHERITED;
 };
 
 #endif
 
 #endif