cc: Distinguish single texture mask from normal masks

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 <stddef.h>
 
 #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"
@@ skipping 66 matching lines @@
 
   scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
       gfx::Rect(25, 25, 50, 50), kCSSGreen, 1, SK_ColorBLACK);
   background->AddChild(green);
 
   gfx::Size mask_bounds(50, 50);
   MaskContentLayerClient client(mask_bounds);
   scoped_refptr<PictureLayer> mask = PictureLayer::Create(&client);
   mask->SetBounds(mask_bounds);
   mask->SetIsDrawable(true);
-  mask->SetIsMask(true);
+  mask->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
   green->SetMaskLayer(mask.get());
 
   RunPixelResourceTest(background,
                        base::FilePath(FILE_PATH_LITERAL("mask_of_layer.png")));
 }
 
 TEST_P(LayerTreeHostMasksPixelTest, ImageMaskOfLayer) {
   scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
       gfx::Rect(100, 100), SK_ColorWHITE);
 
   gfx::Size mask_bounds(50, 50);
 
   scoped_refptr<PictureImageLayer> mask = PictureImageLayer::Create();
   mask->SetIsDrawable(true);
-  mask->SetIsMask(true);
+  mask->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
   mask->SetBounds(mask_bounds);
 
   sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(200, 200);
   PaintCanvas* canvas = surface->getCanvas();
   canvas->scale(SkIntToScalar(4), SkIntToScalar(4));
   MaskContentLayerClient client(mask_bounds);
   scoped_refptr<DisplayItemList> mask_display_list =
       client.PaintContentsToDisplayList(
           ContentLayerClient::PAINTING_BEHAVIOR_NORMAL);
   mask_display_list->Raster(canvas, nullptr);
@@ skipping 21 matching lines @@
 
   scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
       gfx::Rect(25, 25, 50, 50), kCSSGreen, 1, SK_ColorBLACK);
   clip->AddChild(green);
 
   gfx::Size mask_bounds(50, 50);
   MaskContentLayerClient client(mask_bounds);
   scoped_refptr<PictureLayer> mask = PictureLayer::Create(&client);
   mask->SetBounds(mask_bounds);
   mask->SetIsDrawable(true);
-  mask->SetIsMask(true);
+  mask->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
   green->SetMaskLayer(mask.get());
 
   RunPixelResourceTest(
       background,
       base::FilePath(FILE_PATH_LITERAL("mask_of_clipped_layer.png")));
 }
 
 class CheckerContentLayerClient : public ContentLayerClient {
  public:
   CheckerContentLayerClient(const gfx::Size& bounds,
@@ skipping 104 matching lines @@
 
   FilterOperations filters;
   filters.Append(FilterOperation::CreateGrayscaleFilter(1.0));
   blur->SetBackgroundFilters(filters);
 
   gfx::Size mask_bounds(100, 100);
   CircleContentLayerClient mask_client(mask_bounds);
   scoped_refptr<PictureLayer> mask = PictureLayer::Create(&mask_client);
   mask->SetBounds(mask_bounds);
   mask->SetIsDrawable(true);
-  mask->SetIsMask(true);
+  mask->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
   blur->SetMaskLayer(mask.get());
 
   float percentage_pixels_large_error = 2.5f;  // 2.5%, ~250px / (100*100)
   float percentage_pixels_small_error = 0.0f;
   float average_error_allowed_in_bad_pixels = 100.0f;
   int large_error_allowed = 256;
   int small_error_allowed = 0;
   pixel_comparator_.reset(new FuzzyPixelComparator(
       true,  // discard_alpha
       percentage_pixels_large_error,
@@ skipping 30 matching lines @@
   picture_horizontal->SetBlendMode(SkBlendMode::kMultiply);
 
   background->AddChild(picture_vertical);
   background->AddChild(picture_horizontal);
 
   gfx::Size mask_bounds(128, 128);
   CircleContentLayerClient mask_client(mask_bounds);
   scoped_refptr<PictureLayer> mask = PictureLayer::Create(&mask_client);
   mask->SetBounds(mask_bounds);
   mask->SetIsDrawable(true);
-  mask->SetIsMask(true);
+  mask->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
   picture_horizontal->SetMaskLayer(mask.get());
 
   float percentage_pixels_large_error = 0.04f;  // 0.04%, ~6px / (128*128)
   float percentage_pixels_small_error = 0.0f;
   float average_error_allowed_in_bad_pixels = 256.0f;
   int large_error_allowed = 256;
   int small_error_allowed = 0;
   pixel_comparator_.reset(new FuzzyPixelComparator(
       true,  // discard_alpha
       percentage_pixels_large_error,
       percentage_pixels_small_error,
       average_error_allowed_in_bad_pixels,
       large_error_allowed,
       small_error_allowed));
 
   RunPixelResourceTest(background,
                        base::FilePath(
                            FILE_PATH_LITERAL("mask_of_layer_with_blend.png")));
 }
 
 }  // namespace
 }  // namespace cc
 
 #endif  // !defined(OS_ANDROID)