Push isEqual/onIsEqual down from GrProcessor to subclasses.

src/gpu/effects/GrDitherEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/builders/GrGLProgramBuilder.h"
 #include "GrDitherEffect.h"
 
@@ skipping 22 matching lines @@
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendFragmentProcessorFactory<DitherEffect>::getInstance();
     }
 
 private:
     DitherEffect() {
         this->setWillReadFragmentPosition();
     }
 
     // All dither effects are equal
-    virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE { return true; }
+    virtual bool onIsEqual(const GrFragmentProcessor&) const SK_OVERRIDE { return true; }
 
     virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
 void DitherEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
     inout->setToUnknown();
@@ skipping 53 matching lines @@
     fsBuilder->codeAppendf("\t\tfloat r = "
                            "fract(sin(dot(%s.xy ,vec2(12.9898,78.233))) * 43758.5453);\n",
                            fsBuilder->fragmentPosition());
     fsBuilder->codeAppendf("\t\t%s = (1.0/255.0) * vec4(r, r, r, r) + %s;\n",
                            outputColor, GrGLSLExpr4(inputColor).c_str());
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GrFragmentProcessor* GrDitherEffect::Create() { return DitherEffect::Create(); }