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

src/gpu/effects/GrBicubicEffect.h

Index: src/gpu/effects/GrBicubicEffect.h
diff --git a/src/gpu/effects/GrBicubicEffect.h b/src/gpu/effects/GrBicubicEffect.h
index 810e4431623e950ab5353227a48b6d8f542b1e21..f95b3f962277759b19ef9318a3ab887495fc2e20 100644
--- a/src/gpu/effects/GrBicubicEffect.h
+++ b/src/gpu/effects/GrBicubicEffect.h
@@ -27,8 +27,6 @@ public:
 
     const char* name() const override { return "Bicubic"; }
 
-    GrGLFragmentProcessor* createGLInstance() const override;
-
     const GrTextureDomain& domain() const { return fDomain; }
 
     /**
@@ -93,6 +91,8 @@ private:
     GrBicubicEffect(GrProcessorDataManager*, GrTexture*, const SkScalar coefficients[16],
                     const SkMatrix &matrix, const SkRect& domain);
 
+    GrGLFragmentProcessor* onCreateGLInstance() const override;
+
     void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor&) const override;