Step towards variable length effect keys.

src/gpu/effects/GrDistanceFieldTextureEffect.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 "GrDistanceFieldTextureEffect.h"
 #include "gl/GrGLEffect.h"
+#include "gl/GrGLShaderBuilder.h"
 #include "gl/GrGLSL.h"
 #include "gl/GrGLTexture.h"
 #include "gl/GrGLVertexEffect.h"
 #include "GrTBackendEffectFactory.h"
 #include "GrTexture.h"
 
 #include "SkDistanceFieldGen.h"
 
 // To get optical sizes people don't complain about when we blit correctly,
 // we need to slightly bold each glyph. On the Mac, we need a larger bold value.
@@ skipping 471 matching lines @@
                            GrTextureParams::kNone_FilterMode);
     GrColor textColor = GrColorPackRGBA(random->nextULessThan(256),
                                         random->nextULessThan(256),
                                         random->nextULessThan(256),
                                         random->nextULessThan(256));
     return GrDistanceFieldLCDTextureEffect::Create(textures[texIdx], params,
                                                    textures[texIdx2], params2,
                                                    textColor,
                                                    random->nextBool(), random->nextBool());
 }