Add more specialized fragment builders

src/gpu/effects/GrMatrixConvolutionEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "GrMatrixConvolutionEffect.h"
 #include "glsl/GrGLSLFragmentProcessor.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
 #include "glsl/GrGLSLProgramDataManager.h"
@@ skipping 43 matching lines @@
                                           kFloat_GrSLType, kDefault_GrSLPrecision, "Gain");
     fBiasUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                           kFloat_GrSLType, kDefault_GrSLPrecision, "Bias");
 
     const char* kernelOffset = uniformHandler->getUniformCStr(fKernelOffsetUni);
     const char* imgInc = uniformHandler->getUniformCStr(fImageIncrementUni);
     const char* kernel = uniformHandler->getUniformCStr(fKernelUni);
     const char* gain = uniformHandler->getUniformCStr(fGainUni);
     const char* bias = uniformHandler->getUniformCStr(fBiasUni);
 
-    GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+    GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
     SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0);
     fragBuilder->codeAppend("vec4 sum = vec4(0, 0, 0, 0);");
     fragBuilder->codeAppendf("vec2 coord = %s - %s * %s;", coords2D.c_str(), kernelOffset, imgInc);
     fragBuilder->codeAppend("vec4 c;");
 
     for (int y = 0; y < kHeight; y++) {
         for (int x = 0; x < kWidth; x++) {
             GrGLSLShaderBuilder::ShaderBlock block(fragBuilder);
             fragBuilder->codeAppendf("float k = %s[%d * %d + %d];", kernel, y, kWidth, x);
             SkString coord;
@@ skipping 173 matching lines @@
     return GrMatrixConvolutionEffect::Create(d->fTextures[texIdx],
                                              bounds,
                                              kernelSize,
                                              kernel.get(),
                                              gain,
                                              bias,
                                              kernelOffset,
                                              tileMode,
                                              convolveAlpha);
 }