Make XPFragmentBuilder only Builder with access to DstCopy.

src/gpu/gl/GrGLPathProcessor.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 "GrGLPathProcessor.h"
 
 #include "GrPathProcessor.h"
 #include "GrGLGpu.h"
 #include "GrGLPathRendering.h"
 
 GrGLPathProcessor::GrGLPathProcessor(const GrPathProcessor&, const GrBatchTracker&)
     : fColor(GrColor_ILLEGAL) {}
 
 void GrGLPathProcessor::emitCode(EmitArgs& args) {
     GrGLGPBuilder* pb = args.fPB;
-    GrGLGPFragmentBuilder* fs = args.fPB->getFragmentShaderBuilder();
+    GrGLFragmentBuilder* fs = args.fPB->getFragmentShaderBuilder();
     const PathBatchTracker& local = args.fBT.cast<PathBatchTracker>();
 
     // emit transforms
     this->emitTransforms(args.fPB, args.fTransformsIn, args.fTransformsOut);
 
     // Setup uniform color
     if (kUniform_GrGPInput == local.fInputColorType) {
         const char* stagedLocalVarName;
         fColorUniform = pb->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                        kVec4f_GrSLType,
@@ skipping 93 matching lines @@
         SkASSERT(transforms[t].fType == kVec2f_GrSLType ||
                  transforms[t].fType == kVec3f_GrSLType);
         unsigned components = transforms[t].fType == kVec2f_GrSLType ? 2 : 3;
         glpr->setProgramPathFragmentInputTransform(programID,
                                                    fragmentInput.fLocation,
                                                    GR_GL_OBJECT_LINEAR,
                                                    components,
                                                    transform);
     }
 }