Move GrInvariantOutput out of GrProcessor and into its own class.

src/gpu/effects/GrCustomCoordsTextureEffect.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrCustomCoordsTextureEffect_DEFINED
 #define GrCustomCoordsTextureEffect_DEFINED
 
 #include "GrProcessor.h"
 #include "GrGeometryProcessor.h"
 
 class GrGLCustomCoordsTextureEffect;
+class GrInvariantOutput;
 
 /**
  * The output color of this effect is a modulation of the input color and a sample from a texture.
  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
  * coords are a custom attribute.
  */
 class GrCustomCoordsTextureEffect : public GrGeometryProcessor {
 public:
     static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& p) {
         return SkNEW_ARGS(GrCustomCoordsTextureEffect, (tex, p));
     }
 
     virtual ~GrCustomCoordsTextureEffect() {}
 
     static const char* Name() { return "Texture"; }
 
     const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
 
     typedef GrGLCustomCoordsTextureEffect GLProcessor;
 
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
     GrCustomCoordsTextureEffect(GrTexture* texture, const GrTextureParams& params);
 
     virtual bool onIsEqual(const GrGeometryProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
+    virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE;
 
     GrTextureAccess    fTextureAccess;
     const GrShaderVar& fInTextureCoords;
 
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
     typedef GrGeometryProcessor INHERITED;
 };
 
 #endif