Add ShaderBuilders to EmitArgs and remove gettings from ProgBuilder.

src/gpu/glsl/GrGLSLPrimitiveProcessor.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 "GrGLSLPrimitiveProcessor.h"
 
 #include "glsl/GrGLSLProgramBuilder.h"
@@ skipping 15 matching lines @@
             combined[SkMatrix::kMPersp0] - combined[SkMatrix::kMSkewY]);
         combined.set(SkMatrix::kMScaleY,
             combined[SkMatrix::kMPersp1] - combined[SkMatrix::kMScaleY]);
         combined.set(SkMatrix::kMTransY,
             combined[SkMatrix::kMPersp2] - combined[SkMatrix::kMTransY]);
     }
     return combined;
 }
 
 void GrGLSLPrimitiveProcessor::setupUniformColor(GrGLSLGPBuilder* pb,
+                                                 GrGLSLFragmentBuilder* fragBuilder,
                                                  const char* outputName,
                                                  UniformHandle* colorUniform) {
-    GrGLSLFragmentBuilder* fs = pb->getFragmentShaderBuilder();
     SkASSERT(colorUniform);
     const char* stagedLocalVarName;
     *colorUniform = pb->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
                                    kVec4f_GrSLType,
                                    kDefault_GrSLPrecision,
                                    "Color",
                                    &stagedLocalVarName);
-    fs->codeAppendf("%s = %s;", outputName, stagedLocalVarName);
+    fragBuilder->codeAppendf("%s = %s;", outputName, stagedLocalVarName);
 }