Clean up GrGLSLFragmentProcessor-derived classes

src/effects/GrCircleBlurFragmentProcessor.cpp

Index: src/effects/GrCircleBlurFragmentProcessor.cpp
diff --git a/src/effects/GrCircleBlurFragmentProcessor.cpp b/src/effects/GrCircleBlurFragmentProcessor.cpp
index 83faa86fa2df834efa734cb819d7e9e1c691a200..decb3c2d5e855f33312aae2ffe3dc73c71d3544d 100644
--- a/src/effects/GrCircleBlurFragmentProcessor.cpp
+++ b/src/effects/GrCircleBlurFragmentProcessor.cpp
@@ -21,7 +21,6 @@
 
 class GrGLCircleBlurFragmentProcessor : public GrGLSLFragmentProcessor {
 public:
-    GrGLCircleBlurFragmentProcessor(const GrProcessor&) {}
     void emitCode(EmitArgs&) override;
 
 protected:
@@ -100,7 +99,7 @@ GrCircleBlurFragmentProcessor::GrCircleBlurFragmentProcessor(const SkRect& circl
 }
 
 GrGLSLFragmentProcessor* GrCircleBlurFragmentProcessor::onCreateGLSLInstance() const {
-    return new GrGLCircleBlurFragmentProcessor(*this);
+    return new GrGLCircleBlurFragmentProcessor;
 }
 
 void GrCircleBlurFragmentProcessor::onGetGLSLProcessorKey(const GrGLSLCaps& caps,