Create fragment processor for performing input color blend with child processor

src/gpu/effects/GrCustomXfermodePriv.h

Index: src/gpu/effects/GrCustomXfermodePriv.h
diff --git a/src/gpu/effects/GrCustomXfermodePriv.h b/src/gpu/effects/GrCustomXfermodePriv.h
deleted file mode 100644
index 05e07b64ced3035e1c8979067b0aa4d7094ac7dc..0000000000000000000000000000000000000000
--- a/src/gpu/effects/GrCustomXfermodePriv.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef GrCustomXfermodePriv_DEFINED
-#define GrCustomXfermodePriv_DEFINED
-
-#include "GrCaps.h"
-#include "GrCoordTransform.h"
-#include "GrFragmentProcessor.h"
-#include "GrTextureAccess.h"
-#include "GrXferProcessor.h"
-#include "SkXfermode.h"
-
-class GrGLCaps;
-class GrGLFragmentProcessor;
-class GrInvariantOutput;
-class GrProcessorKeyBuilder;
-class GrTexture;
-
-///////////////////////////////////////////////////////////////////////////////
-// Fragment Processor
-///////////////////////////////////////////////////////////////////////////////
-
-class GrCustomXferFP : public GrFragmentProcessor {
-public:
-    GrCustomXferFP(GrProcessorDataManager*, SkXfermode::Mode mode, GrTexture* background);
-
-    const char* name() const override { return "Custom Xfermode"; }
-
-    SkXfermode::Mode mode() const { return fMode; }
-    const GrTextureAccess&  backgroundAccess() const { return fBackgroundAccess; }
-
-private:
-    GrGLFragmentProcessor* onCreateGLInstance() const override;
-
-    void onGetGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override;
-
-    bool onIsEqual(const GrFragmentProcessor& other) const override; 
-
-    void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
-
-    GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
-
-    SkXfermode::Mode fMode;
-    GrCoordTransform fBackgroundTransform;
-    GrTextureAccess  fBackgroundAccess;
-
-    typedef GrFragmentProcessor INHERITED;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-// Xfer Processor
-///////////////////////////////////////////////////////////////////////////////
-
-class GrCustomXPFactory : public GrXPFactory {
-public:
-    GrCustomXPFactory(SkXfermode::Mode mode); 
-
-    bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlags) const override {
-        return true;
-    }
-
-    void getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
-                                  GrXPFactory::InvariantBlendedColor*) const override;
-
-private:
-    GrXferProcessor* onCreateXferProcessor(const GrCaps& caps,
-                                           const GrProcOptInfo& colorPOI,
-                                           const GrProcOptInfo& coveragePOI,
-                                           bool hasMixedSamples,
-                                           const DstTexture*) const override; 
-
-    bool willReadDstColor(const GrCaps& caps,
-                          const GrProcOptInfo& colorPOI,
-                          const GrProcOptInfo& coveragePOI,
-                          bool hasMixedSamples) const override;
-
-    bool onIsEqual(const GrXPFactory& xpfBase) const override {
-        const GrCustomXPFactory& xpf = xpfBase.cast<GrCustomXPFactory>();
-        return fMode == xpf.fMode;
-    }
-
-    GR_DECLARE_XP_FACTORY_TEST;
-
-    SkXfermode::Mode fMode;
-    GrBlendEquation  fHWBlendEquation;
-
-    typedef GrXPFactory INHERITED;
-};
-#endif
-