(WIP) Paint invalidation for slimming paint v2

Source/core/paint/BlockPainter.cpp

Index: Source/core/paint/BlockPainter.cpp
diff --git a/Source/core/paint/BlockPainter.cpp b/Source/core/paint/BlockPainter.cpp
index 7e38f20f45d8223a1dd554ac18c686e4adbddf35..47d7dc99fdcb944b05b8fbd7c508d4ffa9f85c3c 100644
--- a/Source/core/paint/BlockPainter.cpp
+++ b/Source/core/paint/BlockPainter.cpp
@@ -28,6 +28,15 @@
 
 namespace blink {
 
+static inline LayoutRect visualOverflowRectWithPaintOffset(const LayoutBlock& layoutBox, const LayoutPoint& paintOffset)
+{
+    if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
+        return LayoutRect();
+    LayoutRect bounds = layoutBox.visualOverflowRect();
+    bounds.moveBy(paintOffset);
+    return bounds;
+}
+
 void BlockPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     PaintInfo localPaintInfo(paintInfo);
@@ -43,6 +52,9 @@ void BlockPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOff
     if (!overflowBox.intersects(LayoutRect(localPaintInfo.rect)))
         return;
 
+    if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+        m_layoutBlock.invalidatePaintIfNeededForSlimmingPaintV2(adjustedPaintOffset);
+
     SubtreeRecorder subtreeRecorder(*paintInfo.context, m_layoutBlock, paintInfo.phase);
     if (subtreeRecorder.canUseCache())
         return;
@@ -151,15 +163,6 @@ void BlockPainter::paintAsInlineBlock(LayoutObject& layoutObject, const PaintInf
     }
 }
 
-static inline LayoutRect visualOverflowRectWithPaintOffset(const LayoutBlock& layoutBox, const LayoutPoint& paintOffset)
-{
-    if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
-        return LayoutRect();
-    LayoutRect bounds = layoutBox.visualOverflowRect();
-    bounds.moveBy(paintOffset);
-    return bounds;
-}
-
 void BlockPainter::paintObject(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     const PaintPhase paintPhase = paintInfo.phase;