s/sk_tools::DrawCheckerboard/sk_tool_utils::draw_checkerboard/

tools/Checkerboard.cpp

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "Checkerboard.h"
-#include "SkCanvas.h"
-#include "SkShader.h"
-
-SkShader* sk_tools::CreateCheckerboardShader(
-        SkColor c1, SkColor c2, int size) {
-    SkBitmap bm;
-    bm.allocN32Pixels(2 * size, 2 * size);
-    bm.eraseColor(c1);
-    bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2);
-    bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2);
-    return SkShader::CreateBitmapShader(
-            bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode);
-}
-
-void sk_tools::DrawCheckerboard(SkCanvas* canvas,
-                                    SkColor c1, SkColor c2, int size) {
-    SkPaint paint;
-    paint.setShader(CreateCheckerboardShader(c1, c2, size))->unref();
-    canvas->drawPaint(paint);
-}