Add more specialized fragment builders

src/gpu/effects/GrBitmapTextGeoProc.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 "GrBitmapTextGeoProc.h"
 #include "GrInvariantOutput.h"
 #include "GrTexture.h"
@@ skipping 25 matching lines @@
         SkScalar recipWidth = 1.0f / atlas->width();
         SkScalar recipHeight = 1.0f / atlas->height();
 
         GrGLSLVertToFrag v(kVec2f_GrSLType);
         varyingHandler->addVarying("TextureCoords", &v);
         vertBuilder->codeAppendf("%s = vec2(%.*f, %.*f) * %s;", v.vsOut(),
                                  GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipWidth,
                                  GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipHeight,
                                  cte.inTextureCoords()->fName);
 
-        GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+        GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder;
         // Setup pass through color
         if (!cte.colorIgnored()) {
             if (cte.hasVertexColor()) {
                 varyingHandler->addPassThroughAttribute(cte.inColor(), args.fOutputColor);
             } else {
                 this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor,
                                         &fColorUniform);
             }
         }
 
@@ skipping 135 matching lines @@
             break;
         case 2:
             format = kARGB_GrMaskFormat;
             break;
     }
 
     return GrBitmapTextGeoProc::Create(GrRandomColor(d->fRandom), d->fTextures[texIdx], params,
                                        format, GrTest::TestMatrix(d->fRandom),
                                        d->fRandom->nextBool());
 }