Name of primitive processor will now be printed in generated shader code

src/gpu/gl/builders/GrGLProgramBuilder.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 "GrGLProgramBuilder.h"
 
 #include "gl/GrGLGeometryProcessor.h"
@@ skipping 250 matching lines @@
                                             GrGLSLExpr4* outputCoverage) {
     // Program builders have a bit of state we need to clear with each effect
     AutoStageAdvance adv(this);
     this->nameExpression(outputColor, "outputColor");
     this->nameExpression(outputCoverage, "outputCoverage");
 
     // Enclose custom code in a block to avoid namespace conflicts
     SkString openBrace;
     openBrace.printf("{ // Stage %d, %s\n", fStageIndex, proc.name());
     fFS.codeAppend(openBrace.c_str());
+    fVS.codeAppendf("// Primitive Processor %s\n", proc.name());
 
     this->emitAndInstallProc(proc, outputColor->c_str(), outputCoverage->c_str());
 
     fFS.codeAppend("}");
 }
 
 void GrGLProgramBuilder::emitAndInstallProc(const GrPendingFragmentStage& fs,
                                             int index,
                                             const char* outColor,
                                             const char* inColor) {
@@ skipping 214 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 GrGLInstalledFragProcs::~GrGLInstalledFragProcs() {
     int numProcs = fProcs.count();
     for (int e = 0; e < numProcs; ++e) {
         SkDELETE(fProcs[e]);
     }
 }