remove avoid and pixelxor xfermodes

gm/avoidxfermode.cpp

-/*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "gm.h"
-#include "Resources.h"
-
-#include "SkAvoidXfermode.h"
-#include "SkStream.h"
-
-class AvoidXfermodeGM : public skiagm::GM {
-public:
-    AvoidXfermodeGM() { }
-
-protected:
-    SkString onShortName() override {
-        return SkString("avoidxfermode");
-    }
-
-    SkISize onISize() override { return SkISize::Make(128, 128); }
-
-    void onOnceBeforeDraw() override {
-        if (!GetResourceAsBitmap("color_wheel.png", &fBM)) {
-            fBM.allocN32Pixels(1, 1);
-            fBM.eraseARGB(255, 255, 0 , 0); // red == bad
-        }
-    }
-
-    void onDraw(SkCanvas* canvas) override {
-        canvas->drawBitmap(fBM, 0, 0);
-
-        SkRect r = SkRect::MakeIWH(64, 64);
-
-        // UL corner: replace white with black with a tight tolerance
-        SkPaint p1;
-        p1.setColor(SK_ColorBLACK);
-        p1.setXfermode(SkAvoidXfermode::Make(SK_ColorWHITE, 5, SkAvoidXfermode::kTargetColor_Mode));
-
-        canvas->drawRect(r, p1);
-
-        r.offsetTo(64, 0.0f);
-
-        // UR corner: draw black everywhere except white with a tight tolerance
-        SkPaint p2;
-        p2.setColor(SK_ColorBLACK);
-        p2.setXfermode(SkAvoidXfermode::Make(SK_ColorWHITE, 250,
-                                             SkAvoidXfermode::kAvoidColor_Mode));
-
-        canvas->drawRect(r, p2);
-
-        r.offsetTo(0.0f, 64);
-
-        // LL corner: replace red with transparent blue with a loose tolerance
-        SkPaint p3;
-        p3.setColor(0x7F0000FF);
-        p3.setXfermode(SkAvoidXfermode::Make(SK_ColorRED, 250, SkAvoidXfermode::kTargetColor_Mode));
-
-        canvas->drawRect(r, p3);
-
-        r.offsetTo(64, 64);
-
-        // LR corner: draw black everywhere except red with a loose tolerance
-        SkPaint p4;
-        p4.setColor(SK_ColorBLACK);
-        p4.setXfermode(SkAvoidXfermode::Make(SK_ColorRED, 5, SkAvoidXfermode::kAvoidColor_Mode));
-
-        canvas->drawRect(r, p4);
-    }
-
-private:
-    SkBitmap fBM;
-
-    typedef GM INHERITED;
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-DEF_GM(return new AvoidXfermodeGM;)