Implement support for CHROMIUM_path_rendering pseudo extension

src/gpu/gl/builders/GrGLProgramBuilder.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLProgramBuilder_DEFINED
 #define GrGLProgramBuilder_DEFINED
 
@@ skipping 310 matching lines @@
 
     void verify(const GrPrimitiveProcessor&);
     void verify(const GrXferProcessor&);
     void verify(const GrFragmentProcessor&);
     template <class Proc>
     void emitSamplers(const GrProcessor&,
                       GrGLProcessor::TextureSamplerArray* outSamplers,
                       GrGLInstalledProc<Proc>*);
 
     GrGLProgram* finalize();
-    void bindProgramResourceLocations(GrGLuint programID);
+    virtual void bindProgramResourceLocations(GrGLuint programID);
     bool checkLinkStatus(GrGLuint programID);
     virtual void resolveProgramResourceLocations(GrGLuint programID);
     void cleanupProgram(GrGLuint programID, const SkTDArray<GrGLuint>& shaderIDs);
     void cleanupShaders(const SkTDArray<GrGLuint>& shaderIDs);
 
     // Subclasses create different programs
     virtual GrGLProgram* createProgram(GrGLuint programID);
 
     void appendUniformDecls(ShaderVisibility, SkString*) const;
 
@@ skipping 55 matching lines @@
     GrGLPrimitiveProcessor::TransformsIn fCoordTransforms;
     GrGLPrimitiveProcessor::TransformsOut fOutCoords;
     SkTArray<UniformHandle> fSamplerUniforms;
 
     friend class GrGLShaderBuilder;
     friend class GrGLVertexBuilder;
     friend class GrGLFragmentShaderBuilder;
     friend class GrGLGeometryBuilder;
 };
 #endif