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

src/effects/SkLumaColorFilter.cpp

Index: src/effects/SkLumaColorFilter.cpp
diff --git a/src/effects/SkLumaColorFilter.cpp b/src/effects/SkLumaColorFilter.cpp
index 939accf13b187244e221f664c10b50049c0c4df6..8d5181a4f5f9dad9c6b412d2a7ed696171c2b1b1 100644
--- a/src/effects/SkLumaColorFilter.cpp
+++ b/src/effects/SkLumaColorFilter.cpp
@@ -65,10 +65,6 @@ public:
 
     const char* name() const override { return "Luminance-to-Alpha"; }
 
-    GrGLFragmentProcessor* createGLInstance() const override {
-        return SkNEW_ARGS(GLProcessor, (*this));
-    }
-
     class GLProcessor : public GrGLFragmentProcessor {
     public:
         GLProcessor(const GrProcessor&) {}
@@ -100,6 +96,10 @@ private:
         this->initClassID<LumaColorFilterEffect>();
     }
 
+    GrGLFragmentProcessor* onCreateGLInstance() const override {
+        return SkNEW_ARGS(GLProcessor, (*this));
+    }
+
     virtual void onGetGLProcessorKey(const GrGLSLCaps& caps,
                                      GrProcessorKeyBuilder* b) const override {
         GLProcessor::GenKey(*this, caps, b);