cc: Make PaintCanvas abstract

third_party/WebKit/Source/platform/mac/GraphicsContextCanvasTest.mm

 // Copyright (c) 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/mac/GraphicsContextCanvas.h"
 #include "skia/ext/skia_utils_mac.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 enum TestType {
   TestIdentity = 0,
   TestTranslate = 1,
   TestClip = 2,
   TestXClip = TestTranslate | TestClip,
 };
 
 void RunTest(TestType test) {
   const unsigned width = 2;
   const unsigned height = 2;
   const unsigned storageSize = width * height;
   const unsigned original[] = {0xFF333333, 0xFF666666, 0xFF999999, 0xFFCCCCCC};
   EXPECT_EQ(storageSize, sizeof(original) / sizeof(original[0]));
   unsigned bits[storageSize];
   memcpy(bits, original, sizeof(original));
   SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
   SkBitmap bitmap;
   bitmap.installPixels(info, bits, info.minRowBytes());
 
-  PaintCanvas canvas(bitmap);
+  SkiaPaintCanvas canvas(bitmap);
   if (test & TestTranslate)
     canvas.translate(width / 2, 0);
   if (test & TestClip) {
     SkRect clipRect = {0, height / 2, width, height};
     canvas.clipRect(clipRect);
   }
   {
     SkIRect clip =
         SkIRect::MakeSize(canvas.getBaseLayerSize())
             .makeOffset(
@@ skipping 25 matching lines @@
 
 TEST(GraphicsContextCanvasTest, Clip) {
   RunTest(TestClip);
 }
 
 TEST(GraphicsContextCanvasTest, XClip) {
   RunTest(TestXClip);
 }
 
 }  // namespace