Traverse into child LayoutViews during invalidateTreeIfNeeded

Source/core/layout/PaintInvalidationState.cpp

Index: Source/core/layout/PaintInvalidationState.cpp
diff --git a/Source/core/layout/PaintInvalidationState.cpp b/Source/core/layout/PaintInvalidationState.cpp
index e7d62cf67a432bbce509508e0a55095793e5f84f..814967cde886f86a054dc102cb8c483a7bec4dab 100644
--- a/Source/core/layout/PaintInvalidationState.cpp
+++ b/Source/core/layout/PaintInvalidationState.cpp
@@ -15,17 +15,17 @@ namespace blink {
 
 PaintInvalidationState::PaintInvalidationState(const LayoutView& layoutView, Vector<LayoutObject*>& pendingDelayedPaintInvalidations)
     : m_clipped(false)
-    , m_cachedOffsetsEnabled(true)
-    , m_forceCheckForPaintInvalidation(false)
+    , m_cachedOffsetsEnabled(layoutView.paintInvalidationCachedOffsetsEnabledByParent())
+    , m_forceCheckForPaintInvalidation(layoutView.forceCheckForPaintInvalidationByParent())
     , m_paintInvalidationContainer(*layoutView.containerForPaintInvalidation())
     , m_pendingDelayedPaintInvalidations(pendingDelayedPaintInvalidations)
 {
     bool establishesPaintInvalidationContainer = layoutView == m_paintInvalidationContainer;
     if (!establishesPaintInvalidationContainer) {
-        if (!layoutView.supportsPaintInvalidationStateCachedOffsets()) {
+        if (m_cachedOffsetsEnabled && !layoutView.supportsPaintInvalidationStateCachedOffsets())
             m_cachedOffsetsEnabled = false;
+        if (!m_cachedOffsetsEnabled)
             return;
-        }
         FloatPoint point = layoutView.localToContainerPoint(FloatPoint(), &m_paintInvalidationContainer, TraverseDocumentBoundaries);
         m_paintOffset = LayoutSize(point.x(), point.y());
     }