Clean up GrGLSLFragmentProcessor-derived classes

src/effects/SkAlphaThresholdFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAlphaThresholdFilter.h"
 #include "SkBitmap.h"
 #include "SkDevice.h"
@@ skipping 125 matching lines @@
     GrCoordTransform fImageCoordTransform;
     GrTextureAccess  fImageTextureAccess;
     GrCoordTransform fMaskCoordTransform;
     GrTextureAccess  fMaskTextureAccess;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
 class GrGLAlphaThresholdEffect : public GrGLSLFragmentProcessor {
 public:
-    GrGLAlphaThresholdEffect(const GrFragmentProcessor&) {}
-
-    virtual void emitCode(EmitArgs&) override;
+    void emitCode(EmitArgs&) override;
 
 protected:
     void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;
 
 private:
 
     GrGLSLProgramDataManager::UniformHandle fInnerThresholdVar;
     GrGLSLProgramDataManager::UniformHandle fOuterThresholdVar;
 
     typedef GrGLSLFragmentProcessor INHERITED;
@@ skipping 71 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void AlphaThresholdEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,
                                                  GrProcessorKeyBuilder* b) const {
     GrGLAlphaThresholdEffect::GenKey(*this, caps, b);
 }
 
 GrGLSLFragmentProcessor* AlphaThresholdEffect::onCreateGLSLInstance() const {
-    return new GrGLAlphaThresholdEffect(*this);
+    return new GrGLAlphaThresholdEffect;
 }
 
 bool AlphaThresholdEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
     const AlphaThresholdEffect& s = sBase.cast<AlphaThresholdEffect>();
     return (this->fInnerThreshold == s.fInnerThreshold &&
             this->fOuterThreshold == s.fOuterThreshold);
 }
 
 void AlphaThresholdEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
     if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) {
@@ skipping 149 matching lines @@
 }
 
 #ifndef SK_IGNORE_TO_STRING
 void SkAlphaThresholdFilterImpl::toString(SkString* str) const {
     str->appendf("SkAlphaThresholdImageFilter: (");
     str->appendf("inner: %f outer: %f", fInnerThreshold, fOuterThreshold);
     str->append(")");
 }
 #endif