WIP: Construct SPV2's scroll paint property tree

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"
+#include "platform/graphics/paint/ScrollPaintPropertyNode.h"
 #include "platform/graphics/paint/TransformPaintPropertyNode.h"
 #include "platform/testing/RuntimeEnabledFeaturesTestHelpers.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "platform/text/TextStream.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
@@ skipping 50 matching lines @@
     }
 
     const ClipPaintPropertyNode* frameContentClip()
     {
         FrameView* frameView = document().view();
         if (RuntimeEnabledFeatures::rootLayerScrollingEnabled())
             return frameView->layoutView()->objectPaintProperties()->overflowClip();
         return frameView->contentClip();
     }
 
+    const ScrollPaintPropertyNode* frameScroll()
+    {
+        FrameView* frameView = document().view();
+        if (RuntimeEnabledFeatures::rootLayerScrollingEnabled())
+            return frameView->layoutView()->objectPaintProperties()->scroll();
+        return frameView->scroll();
+    }
+
 private:
     void SetUp() override
     {
         Settings::setMockScrollbarsEnabled(true);
 
         RenderingTest::SetUp();
         enableCompositing();
     }
 
     void TearDown() override
@@ skipping 75 matching lines @@
     loadTestData("position-and-scroll.html");
 
     Element* scroller = document().getElementById("scroller");
     scroller->scrollTo(0, 100);
     FrameView* frameView = document().view();
     frameView->updateAllLifecyclePhases();
     const ObjectPaintProperties* scrollerProperties = scroller->layoutObject()->objectPaintProperties();
     EXPECT_EQ(TransformationMatrix().translate(0, -100), scrollerProperties->scrollTranslation()->matrix());
     EXPECT_EQ(frameScrollTranslation(), scrollerProperties->scrollTranslation()->parent());
     EXPECT_EQ(frameScrollTranslation(), scrollerProperties->overflowClip()->localTransformSpace());
+    EXPECT_EQ(frameScroll(), scrollerProperties->scroll()->parent());
     EXPECT_EQ(FloatRoundedRect(120, 340, 400, 300), scrollerProperties->overflowClip()->clipRect());
     EXPECT_EQ(frameContentClip(), scrollerProperties->overflowClip()->parent());
     // http://crbug.com/638415
     if (!RuntimeEnabledFeatures::rootLayerScrollingEnabled()) {
         CHECK_EXACT_VISUAL_RECT(LayoutRect(120, 340, 400, 300), scroller->layoutObject(), frameView->layoutView());
     }
 
     // The relative-positioned element should have accumulated box offset (exclude scrolling),
     // and should be affected by ancestor scroll transforms.
     Element* relPos = document().getElementById("rel-pos");
@@ skipping 1522 matching lines @@
     const ObjectPaintProperties* svgWithViewBoxProperties = svgWithViewBox.objectPaintProperties();
 
     EXPECT_EQ(frameScrollTranslation(), svgWithViewBoxProperties->localBorderBoxProperties()->propertyTreeState.transform);
 
     PropertyTreeState contentsProperties;
     svgWithViewBoxProperties->getContentsProperties(contentsProperties);
     EXPECT_EQ(svgWithViewBoxProperties->svgLocalToBorderBoxTransform(), contentsProperties.transform);
 }
 
 } // namespace blink