Remove SkLumaXfermode.

include/effects/SkLumaXfermode.h

Index: include/effects/SkLumaXfermode.h
diff --git a/include/effects/SkLumaXfermode.h b/include/effects/SkLumaXfermode.h
deleted file mode 100644
index b189328fdb1f36cec1249a5a772f7d321804ed30..0000000000000000000000000000000000000000
--- a/include/effects/SkLumaXfermode.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * 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 SkLumaXfermode_DEFINED
-#define SkLumaXfermode_DEFINED
-
-#include "SkXfermode.h"
-
-/**
- *  Luminance mask transfer, as defined in
- *  http://www.w3.org/TR/SVG/masking.html#Masking
- *  http://www.w3.org/TR/css-masking/#MaskValues
- *
- *  The luminance-to-alpha function is applied before performing a standard
- *  SrcIn/DstIn/SrcOver xfer:
- *
- *    luma(C) = (0.2125 * C.r + 0.7154 * C.g + 0.0721 * C.b) * C.a
- *
- *  (where C is un-premultiplied)
- */
-class SK_API SkLumaMaskXfermode : public SkXfermode {
-public:
-    /** Return an SkLumaMaskXfermode object for the specified submode.
-     *
-     *  Only kSrcIn_Mode, kDstIn_Mode kSrcOver_Mode are supported - for everything else,
-     *  the factory returns NULL.
-     */
-    static SkXfermode* Create(SkXfermode::Mode);
-
-    virtual SkPMColor xferColor(SkPMColor, SkPMColor) const SK_OVERRIDE;
-    virtual void xfer32(SkPMColor dst[], const SkPMColor src[], int count,
-                        const SkAlpha aa[]) const SK_OVERRIDE;
-
-    SK_DEVELOPER_TO_STRING()
-    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLumaMaskXfermode)
-    SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
-
-#if SK_SUPPORT_GPU
-    virtual bool asNewEffectOrCoeff(GrContext*, GrEffectRef**, Coeff*, Coeff*,
-                                    GrTexture*) const SK_OVERRIDE;
-#endif
-
-protected:
-    SkLumaMaskXfermode(SkFlattenableReadBuffer&);
-    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
-
-    SkLumaMaskXfermode(SkXfermode::Mode);
-
-private:
-    const SkXfermode::Mode fMode;
-
-    typedef SkXfermode INHERITED;
-
-    virtual SkPMColor lumaProc(const SkPMColor a, const SkPMColor b) const;
-};
-
-#endif