Add ShaderBuilders to EmitArgs and remove gettings from ProgBuilder.

src/gpu/glsl/GrGLSLFragmentProcessor.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLSLFragmentProcessor.h"
 #include "GrFragmentProcessor.h"
 #include "GrProcessor.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
 #include "glsl/GrGLSLProgramBuilder.h"
 
 void GrGLSLFragmentProcessor::setData(const GrGLSLProgramDataManager& pdman,
                                       const GrFragmentProcessor& processor) {
     this->onSetData(pdman, processor);
     SkASSERT(fChildProcessors.count() == processor.numChildProcessors());
     for (int i = 0; i < fChildProcessors.count(); ++i) {
         fChildProcessors[i]->setData(pdman, processor.childProcessor(i));
     }
 }
 
 void GrGLSLFragmentProcessor::emitChild(int childIndex, const char* inputColor, EmitArgs& args) {
     this->internalEmitChild(childIndex, inputColor, args.fOutputColor, args);
 }
 
 void GrGLSLFragmentProcessor::emitChild(int childIndex, const char* inputColor,
-                                      SkString* outputColor, EmitArgs& args) {
+                                        SkString* outputColor, EmitArgs& args) {
 
     SkASSERT(outputColor);
-    GrGLSLFragmentBuilder* fb = args.fBuilder->getFragmentShaderBuilder();
-    outputColor->append(fb->getMangleString());
-    fb->codeAppendf("vec4 %s;", outputColor->c_str());
+    GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+    outputColor->append(fragBuilder->getMangleString());
+    fragBuilder->codeAppendf("vec4 %s;", outputColor->c_str());
     this->internalEmitChild(childIndex, inputColor, outputColor->c_str(), args);
 }
 
 void GrGLSLFragmentProcessor::internalEmitChild(int childIndex, const char* inputColor,
                                                 const char* outputColor, EmitArgs& args) {
-    GrGLSLFragmentBuilder* fb = args.fBuilder->getFragmentShaderBuilder();
+    GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
 
-    fb->onBeforeChildProcEmitCode();  // call first so mangleString is updated
+    fragBuilder->onBeforeChildProcEmitCode();  // call first so mangleString is updated
 
     const GrFragmentProcessor& childProc = args.fFp.childProcessor(childIndex);
 
     /*
      * We now want to find the subset of coords and samplers that belong to the child and its
      * descendants and put that into childCoords and childSamplers. To do so, we'll do a forwards
      * linear search.
      *
      * Explanation:
      * Each GrFragmentProcessor has a copy of all the transforms and textures of itself and
@@ skipping 31 matching lines @@
     GrGLSLTransformedCoordsArray childCoords;
     TextureSamplerArray childSamplers;
     if (childProc.numTransforms() > 0) {
         childCoords.push_back_n(childProc.numTransforms(), &args.fCoords[firstCoordAt]);
     }
     if (childProc.numTextures() > 0) {
         childSamplers.push_back_n(childProc.numTextures(), &args.fSamplers[firstSamplerAt]);
     }
 
     // emit the code for the child in its own scope
-    fb->codeAppend("{\n");
-    fb->codeAppendf("// Child Index %d (mangle: %s): %s\n", childIndex,
-                    fb->getMangleString().c_str(), childProc.name());
+    fragBuilder->codeAppend("{\n");
+    fragBuilder->codeAppendf("// Child Index %d (mangle: %s): %s\n", childIndex,
+                             fragBuilder->getMangleString().c_str(), childProc.name());
     EmitArgs childArgs(args.fBuilder,
+                       fragBuilder,
                        childProc,
                        outputColor,
                        inputColor,
                        childCoords,
                        childSamplers);
     this->childProcessor(childIndex)->emitCode(childArgs);
-    fb->codeAppend("}\n");
+    fragBuilder->codeAppend("}\n");
 
-    fb->onAfterChildProcEmitCode();
+    fragBuilder->onAfterChildProcEmitCode();
 }