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

src/gpu/effects/GrConvexPolyEffect.h

Index: src/gpu/effects/GrConvexPolyEffect.h
diff --git a/src/gpu/effects/GrConvexPolyEffect.h b/src/gpu/effects/GrConvexPolyEffect.h
index d18ed517edf703e98185c3aaa860161182669ddc..ead7fe4ff5e872555f8c27e43fd411b00c86bfc8 100644
--- a/src/gpu/effects/GrConvexPolyEffect.h
+++ b/src/gpu/effects/GrConvexPolyEffect.h
@@ -69,11 +69,11 @@ public:
 
     const SkScalar* getEdges() const { return fEdges; }
 
-    GrGLFragmentProcessor* createGLInstance() const override;
-
 private:
     GrConvexPolyEffect(GrPrimitiveEdgeType edgeType, int n, const SkScalar edges[]);
 
+    GrGLFragmentProcessor* onCreateGLInstance() const override;
+
     void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor& other) const override;