cc: Remove incorrect dcheck for masks.

cc/trees/layer_tree_host_pixeltest_masks.cc

Index: cc/trees/layer_tree_host_pixeltest_masks.cc
diff --git a/cc/trees/layer_tree_host_pixeltest_masks.cc b/cc/trees/layer_tree_host_pixeltest_masks.cc
new file mode 100644
index 0000000000000000000000000000000000000000..16cbd8d30479fea8696f9131d57f37143e0f38b9
--- /dev/null
+++ b/cc/trees/layer_tree_host_pixeltest_masks.cc
@@ -0,0 +1,269 @@
+// 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.h"
+#include "cc/layers/content_layer_client.h"
+#include "cc/layers/image_layer.h"
+#include "cc/test/layer_tree_pixel_test.h"
+#include "cc/test/pixel_comparator.h"
+
+#if !defined(OS_ANDROID)
+
+namespace cc {
+namespace {
+
+class LayerTreeHostMasksPixelTest : public LayerTreePixelTest {};
+
+class MaskContentLayerClient : public cc::ContentLayerClient {
+ public:
+  MaskContentLayerClient() {}
+  virtual ~MaskContentLayerClient() {}
+
+  virtual void DidChangeLayerCanUseLCDText() OVERRIDE {}
+
+  virtual void PaintContents(SkCanvas* canvas,
+                             gfx::Rect rect,
+                             gfx::RectF* opaque_rect) OVERRIDE {
+    SkPaint paint;
+    paint.setStyle(SkPaint::kStroke_Style);
+    paint.setStrokeWidth(SkIntToScalar(2));
+    paint.setColor(SK_ColorWHITE);
+
+    canvas->clear(SK_ColorTRANSPARENT);
+    while (!rect.IsEmpty()) {
+      rect.Inset(3, 3, 2, 2);
+      canvas->drawRect(
+          SkRect::MakeXYWH(rect.x(), rect.y(), rect.width(), rect.height()),
+          paint);
+      rect.Inset(3, 3, 2, 2);
+    }
+  }
+};
+
+TEST_F(LayerTreeHostMasksPixelTest, MaskOfLayer) {
+  scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
+      gfx::Rect(200, 200), SK_ColorWHITE);
+
+  scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
+      gfx::Rect(50, 50, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
+  background->AddChild(green);
+
+  MaskContentLayerClient client;
+  scoped_refptr<ContentLayer> mask = ContentLayer::Create(&client);
+  mask->SetBounds(gfx::Size(100, 100));
+  mask->SetIsDrawable(true);
+  mask->SetIsMask(true);
+  green->SetMaskLayer(mask);
+
+  RunPixelTest(background,
+               base::FilePath(FILE_PATH_LITERAL(
+                   "mask_of_layer.png")));
+}
+
+TEST_F(LayerTreeHostMasksPixelTest, ImageMaskOfLayer) {
+  scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
+      gfx::Rect(200, 200), SK_ColorWHITE);
+
+  scoped_refptr<ImageLayer> mask = ImageLayer::Create();
+  mask->SetIsDrawable(true);
+  mask->SetIsMask(true);
+  mask->SetBounds(gfx::Size(100, 100));
+
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, 400, 400);
+  bitmap.allocPixels();
+  SkCanvas canvas(bitmap);
+  canvas.scale(SkIntToScalar(4), SkIntToScalar(4));
+  MaskContentLayerClient client;
+  client.PaintContents(&canvas,
+                       gfx::Rect(100, 100),
+                       NULL);
+  mask->SetBitmap(bitmap);
+
+  scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
+      gfx::Rect(50, 50, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
+  green->SetMaskLayer(mask);
+  background->AddChild(green);
+
+  RunPixelTest(background,
+               base::FilePath(FILE_PATH_LITERAL(
+                   "image_mask_of_layer.png")));
+}
+
+TEST_F(LayerTreeHostMasksPixelTest, MaskOfClippedLayer) {
+  scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
+      gfx::Rect(200, 200), SK_ColorWHITE);
+
+  // Clip to the top half of the green layer.
+  scoped_refptr<Layer> clip = Layer::Create();
+  clip->SetAnchorPoint(gfx::PointF(0.f, 0.f));
+  clip->SetPosition(gfx::Point(0, 0));
+  clip->SetBounds(gfx::Size(200, 100));
+  clip->SetMasksToBounds(true);
+  background->AddChild(clip);
+
+  scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
+      gfx::Rect(50, 50, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
+  clip->AddChild(green);
+
+  MaskContentLayerClient client;
+  scoped_refptr<ContentLayer> mask = ContentLayer::Create(&client);
+  mask->SetBounds(gfx::Size(100, 100));
+  mask->SetIsDrawable(true);
+  mask->SetIsMask(true);
+  green->SetMaskLayer(mask);
+
+  RunPixelTest(background,
+               base::FilePath(FILE_PATH_LITERAL(
+                   "mask_of_clipped_layer.png")));
+}
+
+TEST_F(LayerTreeHostMasksPixelTest, MaskWithReplica) {
+  scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
+      gfx::Rect(200, 200), SK_ColorWHITE);
+
+  MaskContentLayerClient client;
+  scoped_refptr<ContentLayer> mask = ContentLayer::Create(&client);
+  mask->SetBounds(gfx::Size(100, 100));
+  mask->SetIsDrawable(true);
+  mask->SetIsMask(true);
+
+  scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
+      gfx::Rect(0, 0, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
+  background->AddChild(green);
+  green->SetMaskLayer(mask);
+
+  gfx::Transform replica_transform;
+  replica_transform.Rotate(-90.0);
+
+  scoped_refptr<Layer> replica = Layer::Create();
+  replica->SetAnchorPoint(gfx::PointF(0.5f, 0.5f));
+  replica->SetPosition(gfx::Point(100, 100));
+  replica->SetTransform(replica_transform);
+  green->SetReplicaLayer(replica);
+
+  RunPixelTest(background,
+               base::FilePath(FILE_PATH_LITERAL(
+                   "mask_with_replica.png")));
+}
+
+TEST_F(LayerTreeHostMasksPixelTest, MaskWithReplicaOfClippedLayer) {
+  scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
+      gfx::Rect(200, 200), SK_ColorWHITE);
+
+  MaskContentLayerClient client;
+  scoped_refptr<ContentLayer> mask = ContentLayer::Create(&client);
+  mask->SetBounds(gfx::Size(100, 100));
+  mask->SetIsDrawable(true);
+  mask->SetIsMask(true);
+
+  // Clip to the bottom half of the green layer, and the left half of the
+  // replica.
+  scoped_refptr<Layer> clip = Layer::Create();
+  clip->SetAnchorPoint(gfx::PointF(0.f, 0.f));
+  clip->SetPosition(gfx::Point(0, 50));
+  clip->SetBounds(gfx::Size(150, 150));
+  clip->SetMasksToBounds(true);
+  background->AddChild(clip);
+
+  scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
+      gfx::Rect(0, -50, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
+  clip->AddChild(green);
+  green->SetMaskLayer(mask);
+
+  gfx::Transform replica_transform;
+  replica_transform.Rotate(-90.0);
+
+  scoped_refptr<Layer> replica = Layer::Create();
+  replica->SetAnchorPoint(gfx::PointF(0.5f, 0.5f));
+  replica->SetPosition(gfx::Point(100, 100));
+  replica->SetTransform(replica_transform);
+  green->SetReplicaLayer(replica);
+
+  RunPixelTest(background,
+               base::FilePath(FILE_PATH_LITERAL(
+                   "mask_with_replica_of_clipped_layer.png")));
+}
+
+TEST_F(LayerTreeHostMasksPixelTest, MaskOfReplica) {
+  scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
+      gfx::Rect(200, 200), SK_ColorWHITE);
+
+  MaskContentLayerClient client;
+  scoped_refptr<ContentLayer> mask = ContentLayer::Create(&client);
+  mask->SetBounds(gfx::Size(100, 100));
+  mask->SetIsDrawable(true);
+  mask->SetIsMask(true);
+
+  scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
+      gfx::Rect(50, 0, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
+  background->AddChild(green);
+
+  scoped_refptr<SolidColorLayer> orange = CreateSolidColorLayer(
+      gfx::Rect(-50, 50, 50, 50), kCSSOrange);
+  green->AddChild(orange);
+
+  gfx::Transform replica_transform;
+  replica_transform.Rotate(180.0);
+  replica_transform.Translate(100.0, 0.0);
+
+  scoped_refptr<Layer> replica = Layer::Create();
+  replica->SetAnchorPoint(gfx::PointF(1.f, 1.f));
+  replica->SetPosition(gfx::Point());
+  replica->SetTransform(replica_transform);
+  replica->SetMaskLayer(mask);
+  green->SetReplicaLayer(replica);
+
+  RunPixelTest(background,
+               base::FilePath(FILE_PATH_LITERAL(
+                   "mask_of_replica.png")));
+}
+
+TEST_F(LayerTreeHostMasksPixelTest, MaskOfReplicaOfClippedLayer) {
+  scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
+      gfx::Rect(200, 200), SK_ColorWHITE);
+
+  MaskContentLayerClient client;
+  scoped_refptr<ContentLayer> mask = ContentLayer::Create(&client);
+  mask->SetBounds(gfx::Size(100, 100));
+  mask->SetIsDrawable(true);
+  mask->SetIsMask(true);
+
+  // Clip to the bottom 3/4 of the green layer, and the top 3/4 of the replica.
+  scoped_refptr<Layer> clip = Layer::Create();
+  clip->SetAnchorPoint(gfx::PointF(0.f, 0.f));
+  clip->SetPosition(gfx::Point(0, 25));
+  clip->SetBounds(gfx::Size(200, 150));
+  clip->SetMasksToBounds(true);
+  background->AddChild(clip);
+
+  scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
+      gfx::Rect(50, -25, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
+  clip->AddChild(green);
+
+  scoped_refptr<SolidColorLayer> orange = CreateSolidColorLayer(
+      gfx::Rect(-50, 50, 50, 50), kCSSOrange);
+  green->AddChild(orange);
+
+  gfx::Transform replica_transform;
+  replica_transform.Rotate(180.0);
+  replica_transform.Translate(100.0, 0.0);
+
+  scoped_refptr<Layer> replica = Layer::Create();
+  replica->SetAnchorPoint(gfx::PointF(1.f, 1.f));
+  replica->SetPosition(gfx::Point());
+  replica->SetTransform(replica_transform);
+  replica->SetMaskLayer(mask);
+  green->SetReplicaLayer(replica);
+
+  RunPixelTest(background,
+               base::FilePath(FILE_PATH_LITERAL(
+                   "mask_of_replica_of_clipped_layer.png")));
+}
+
+}  // namespace
+}  // namespace cc
+
+#endif  // OS_ANDROID