Remove SkPorterDuff now that Android has been updated.

src/effects/SkPorterDuff.cpp

Index: src/effects/SkPorterDuff.cpp
diff --git a/src/effects/SkPorterDuff.cpp b/src/effects/SkPorterDuff.cpp
deleted file mode 100644
index 5564ca7c0232439aadaba9e277c53554f54481ca..0000000000000000000000000000000000000000
--- a/src/effects/SkPorterDuff.cpp
+++ /dev/null
@@ -1,91 +0,0 @@
-
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#include "SkPorterDuff.h"
-#include "SkXfermode.h"
-
-#ifdef SK_SUPPORT_LEGACY_PORTER_DUFF
-
-/*  This file just exists as a compatibility layer, gluing the PorterDuff API
-    into the (extended) SkXfermode API
- */
-
-#define MAKE_PAIR(mode) { SkPorterDuff::k##mode##_Mode, SkXfermode::k##mode##_Mode }
-
-// this table must be in SkPorterDuff::Mode order, so it can be indexed directly
-// with a porterduff mode.
-static const struct Pair {
-    SkPorterDuff::Mode  fPD;
-    SkXfermode::Mode    fXF;
-} gPairs[] = {
-    MAKE_PAIR(Clear),
-    MAKE_PAIR(Src),
-    MAKE_PAIR(Dst),
-    MAKE_PAIR(SrcOver),
-    MAKE_PAIR(DstOver),
-    MAKE_PAIR(SrcIn),
-    MAKE_PAIR(DstIn),
-    MAKE_PAIR(SrcOut),
-    MAKE_PAIR(DstOut),
-    MAKE_PAIR(SrcATop),
-    MAKE_PAIR(DstATop),
-    MAKE_PAIR(Xor),
-    MAKE_PAIR(Darken),
-    MAKE_PAIR(Lighten),
-    MAKE_PAIR(Modulate),
-    MAKE_PAIR(Screen),
-    { SkPorterDuff::kAdd_Mode, SkXfermode::kPlus_Mode },
-#ifdef SK_BUILD_FOR_ANDROID
-    MAKE_PAIR(Overlay),
-#endif
-};
-
-static bool find_pdmode(SkXfermode::Mode src, SkPorterDuff::Mode* dst) {
-    const Pair* pairs = gPairs;
-    for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
-        if (pairs[i].fXF == src) {
-            if (dst) {
-                *dst = pairs[i].fPD;
-            }
-            return true;
-        }
-    }
-    return false;
-}
-
-SkXfermode::Mode SkPorterDuff::ToXfermodeMode(Mode mode) {
-    SkASSERT((unsigned)mode < SkPorterDuff::kModeCount);
-    const Pair& pair = gPairs[mode];
-    SkASSERT(pair.fPD == mode);
-    return pair.fXF;
-}
-
-SkXfermode* SkPorterDuff::CreateXfermode(SkPorterDuff::Mode mode) {
-    const Pair& pair = gPairs[mode];
-    SkASSERT(pair.fPD == mode);
-    return SkXfermode::Create(pair.fXF);
-}
-
-bool SkPorterDuff::IsMode(SkXfermode* xfer, Mode* pdmode) {
-    SkXfermode::Mode xfmode;
-    if (!SkXfermode::AsMode(xfer, &xfmode)) {
-        return false;
-    }
-    return find_pdmode(xfmode, pdmode);
-}
-
-SkXfermodeProc SkPorterDuff::GetXfermodeProc(Mode mode) {
-    return SkXfermode::GetProc(gPairs[mode].fXF);
-}
-
-SkXfermodeProc16 SkPorterDuff::GetXfermodeProc16(Mode mode, SkColor srcColor) {
-    return SkXfermode::GetProc16(gPairs[mode].fXF, srcColor);
-}
-
-#endif