Update from https://crrev.com/306655

cc/trees/layer_tree_host_pixeltest_masks.cc

 // Copyright 2013 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 "build/build_config.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_image_layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/test/layer_tree_pixel_resource_test.h"
@@ skipping 29 matching lines @@
     while (!inset_rect.IsEmpty()) {
       inset_rect.Inset(3, 3, 2, 2);
       canvas->drawRect(
           SkRect::MakeXYWH(inset_rect.x(), inset_rect.y(),
                            inset_rect.width(), inset_rect.height()),
           paint);
       inset_rect.Inset(3, 3, 2, 2);
     }
   }
 
+  scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
+      const gfx::Rect& clip,
+      GraphicsContextStatus gc_status) override {
+    NOTIMPLEMENTED();
+    return DisplayItemList::Create();
+  }
+
  private:
   gfx::Size bounds_;
 };
 
 // TODO(enne): these time out on Windows.  http://crbug.com/435632
 #if !defined(OS_WIN)
 
 TEST_P(LayerTreeHostMasksPixelTest, MaskOfLayer) {
   scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
       gfx::Rect(200, 200), SK_ColorWHITE);
@@ skipping 214 matching lines @@
                        base::FilePath(FILE_PATH_LITERAL(
                            "mask_of_replica_of_clipped_layer.png")));
 }
 
 #endif  // !defined(OS_WIN)
 
 }  // namespace
 }  // namespace cc
 
 #endif  // OS_ANDROID