Change random number generator for tests to SkMWCRandom

src/gpu/gl/GrGLEffectMatrix.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 GrGLEffectMatrix_DEFINED
 #define GrGLEffectMatrix_DEFINED
 
 #include "GrGLEffect.h"
 #include "SkMatrix.h"
 
 class GrTexture;
-class SkRandom;
 
 /**
  * This is a helper to implement a texture matrix in a GrGLEffect.
  */
 class GrGLEffectMatrix {
 public:
     typedef GrGLEffect::EffectKey EffectKey;
     /**
      * The matrix uses kKeyBits of the effect's EffectKey. A GrGLEffect may place these bits at an
      * arbitrary shift in its final key. However, when GrGLEffectMatrix::emitCode*() code is called
@@ skipping 62 matching lines @@
         kNoPersp_Key    = 2,
         kGeneral_Key    = 3,
     };
 
     GrGLUniformManager::UniformHandle fUni;
     GrSLType                          fUniType;
     SkMatrix                          fPrevMatrix;
 };
 
 #endif