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

src/gpu/effects/GrSimpleTextureEffect.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrSimpleTextureEffect_DEFINED
 #define GrSimpleTextureEffect_DEFINED
 
@@ skipping 35 matching lines @@
                                        const SkMatrix& matrix,
                                        const GrTextureParams& p,
                                        GrCoordSet coordSet = kLocal_GrCoordSet) {
         return SkNEW_ARGS(GrSimpleTextureEffect, (procDataManager, tex, matrix, p, coordSet));
     }
 
     virtual ~GrSimpleTextureEffect() {}
 
     const char* name() const override { return "SimpleTexture"; }
 
-    GrGLFragmentProcessor* createGLInstance() const override;
-
 private:
     GrSimpleTextureEffect(GrProcessorDataManager* procDataManager,
                           GrTexture* texture,
                           const SkMatrix& matrix,
                           GrTextureParams::FilterMode filterMode,
                           GrCoordSet coordSet)
         : GrSingleTextureEffect(procDataManager, texture, matrix, filterMode, coordSet) {
         this->initClassID<GrSimpleTextureEffect>();
     }
 
     GrSimpleTextureEffect(GrProcessorDataManager* procDataManager,
                           GrTexture* texture,
                           const SkMatrix& matrix,
                           const GrTextureParams& params,
                           GrCoordSet coordSet)
         : GrSingleTextureEffect(procDataManager, texture, matrix, params, coordSet) {
         this->initClassID<GrSimpleTextureEffect>();
     }
 
+    GrGLFragmentProcessor* onCreateGLInstance() const override;
+
     void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor& other) const override { return true; }
 
     void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrSingleTextureEffect INHERITED;
 };
 
 #endif