create GrTestUtils.h, move some common functions into it

src/effects/SkPerlinNoiseShader.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDither.h"
 #include "SkPerlinNoiseShader.h"
 #include "SkColorFilter.h"
@@ skipping 607 matching lines @@
     SkShader* shader = random->nextBool() ?
         SkPerlinNoiseShader::CreateFractalNoise(baseFrequencyX, baseFrequencyY, numOctaves, seed,
                                                 stitchTiles ? &tileSize : NULL) :
         SkPerlinNoiseShader::CreateTurbulence(baseFrequencyX, baseFrequencyY, numOctaves, seed,
                                              stitchTiles ? &tileSize : NULL);
 
     SkPaint paint;
     GrColor paintColor;
     GrFragmentProcessor* effect;
     SkAssertResult(shader->asFragmentProcessor(context, paint,
-                                               GrProcessorUnitTest::TestMatrix(random), NULL,
+                                               GrTest::TestMatrix(random), NULL,
                                                &paintColor, &effect));
 
     SkDELETE(shader);
 
     return effect;
 }
 
 GrGLPerlinNoise::GrGLPerlinNoise(const GrProcessor& processor)
   : fType(processor.cast<GrPerlinNoiseEffect>().type())
   , fStitchTiles(processor.cast<GrPerlinNoiseEffect>().stitchTiles())
@@ skipping 393 matching lines @@
     str->append(" seed: ");
     str->appendScalar(fSeed);
     str->append(" stitch tiles: ");
     str->append(fStitchTiles ? "true " : "false ");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif