Added tree structure to GrGLFragmentProcessor, i.e. GL instances

src/gpu/effects/GrConfigConversionEffect.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrConfigConversionEffect_DEFINED
 #define GrConfigConversionEffect_DEFINED
 
@@ skipping 20 matching lines @@
         kDivByAlpha_RoundDown_PMConversion,
 
         kPMConversionCnt
     };
 
     static const GrFragmentProcessor* Create(GrProcessorDataManager*, GrTexture*,
                                              bool swapRedAndBlue, PMConversion, const SkMatrix&);
 
     const char* name() const override { return "Config Conversion"; }
 
-    GrGLFragmentProcessor* createGLInstance() const override;
-
     bool swapsRedAndBlue() const { return fSwapRedAndBlue; }
     PMConversion  pmConversion() const { return fPMConversion; }
 
     // This function determines whether it is possible to choose PM->UPM and UPM->PM conversions
     // for which in any PM->UPM->PM->UPM sequence the two UPM values are the same. This means that
     // if pixels are read back to a UPM buffer, written back to PM to the GPU, and read back again
     // both reads will produce the same result. This test is quite expensive and should not be run
     // multiple times for a given context.
     static void TestForPreservingPMConversions(GrContext* context,
                                                PMConversion* PMToUPMRule,
                                                PMConversion* UPMToPMRule);
 
 private:
     GrConfigConversionEffect(GrProcessorDataManager*,
                              GrTexture*,
                              bool swapRedAndBlue,
                              PMConversion pmConversion,
                              const SkMatrix& matrix);
 
+    GrGLFragmentProcessor* onCreateGLInstance() const override;
+
     void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor&) const override;
 
     void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
 
     bool            fSwapRedAndBlue;
     PMConversion    fPMConversion;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrSingleTextureEffect INHERITED;
 };
 
 #endif