[SPv2] Create effect nodes for CSS filter

third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilderTest.cpp

 // Copyright 2015 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 "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutTreeAsText.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/paint/ObjectPaintProperties.h"
 #include "core/paint/PaintPropertyTreePrinter.h"
 #include "platform/graphics/paint/GeometryMapper.h"
@@ skipping 2858 matching lines @@
       "    <div id=spanner style='column-span: all'>"
       "      <div id=absolute style='position: absolute'>absolute</div>"
       "    </div>"
       "  </span>"
       "</div>");
   // There should be anonymous block created containing the inline "relative",
   // serving as the container of "absolute".
   EXPECT_TRUE(
       getLayoutObjectByElementId("absolute")->container()->isLayoutBlock());
 }
+
+TEST_P(PaintPropertyTreeBuilderTest, SimpleFilter) {
+  setBodyInnerHTML(
+      "<div id='filter' style='filter:opacity(0.5); height:1000px;'>"
+      "</div>");
+  const ObjectPaintProperties* filterProperties = getLayoutObjectByElementId("filter")->objectPaintProperties();
+  EXPECT_TRUE(filterProperties->effect()->parent()->isRoot());
+  EXPECT_EQ(frameScrollTranslation(), filterProperties->effect()->localTransformSpace());
+  EXPECT_EQ(frameContentClip(), filterProperties->effect()->outputClip());
+}
+
 }  // namespace blink