Added registerChild; transforms, textures, glKey automatically handled.

src/effects/SkAlphaThresholdFilter.cpp

Index: src/effects/SkAlphaThresholdFilter.cpp
diff --git a/src/effects/SkAlphaThresholdFilter.cpp b/src/effects/SkAlphaThresholdFilter.cpp
index c9d72bb67305dff45d7d3591bf667333bd1a5865..15b8f9463d3d28f4f356b3cda0d5adc11e84185d 100644
--- a/src/effects/SkAlphaThresholdFilter.cpp
+++ b/src/effects/SkAlphaThresholdFilter.cpp
@@ -81,8 +81,6 @@ public:
     float innerThreshold() const { return fInnerThreshold; }
     float outerThreshold() const { return fOuterThreshold; }
 
-    void getGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
-
     GrGLFragmentProcessor* createGLInstance() const override;
 
 private:
@@ -108,6 +106,8 @@ private:
         this->addTextureAccess(&fMaskTextureAccess);
     }
 
+    void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
+
     bool onIsEqual(const GrFragmentProcessor&) const override;
 
     void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
@@ -208,7 +208,7 @@ GrFragmentProcessor* AlphaThresholdEffect::TestCreate(GrProcessorTestData* d) {
 
 ///////////////////////////////////////////////////////////////////////////////
 
-void AlphaThresholdEffect::getGLProcessorKey(const GrGLSLCaps& caps,
+void AlphaThresholdEffect::onGetGLProcessorKey(const GrGLSLCaps& caps,
                                              GrProcessorKeyBuilder* b) const {
     GrGLAlphaThresholdEffect::GenKey(*this, caps, b);
 }