New paint invalidation using paint property tree walk

third_party/WebKit/Source/core/dom/DocumentLifecycle.h

Index: third_party/WebKit/Source/core/dom/DocumentLifecycle.h
diff --git a/third_party/WebKit/Source/core/dom/DocumentLifecycle.h b/third_party/WebKit/Source/core/dom/DocumentLifecycle.h
index 2580dd18f16babc483685e87b3fb03ab8d560c37..b56e7258a26e48bf43941194da2623d2ff6a45d0 100644
--- a/third_party/WebKit/Source/core/dom/DocumentLifecycle.h
+++ b/third_party/WebKit/Source/core/dom/DocumentLifecycle.h
@@ -67,12 +67,10 @@ public:
         InPaintInvalidation,
         PaintInvalidationClean,
 
-        // When RuntimeEnabledFeatures::slimmingPaintV2Enabled.
-        InUpdatePaintProperties,
-        UpdatePaintPropertiesClean,
+        // When RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled or RuntimeEnabledFeatures::slimmingPaintV2Enabled.
+        InPrePaintTreeWalk,
+        PrePaintTreeWalkClean,
 
-        // When RuntimeEnabledFeatures::slimmingPaintSynchronizedPaintingEnabled
-        // (implied by slimmingPaintV2Enabled).
         InPaint,
         PaintClean,
 
@@ -184,7 +182,7 @@ inline bool DocumentLifecycle::stateAllowsTreeMutations() const
     return m_state != InStyleRecalc
         && m_state != InPerformLayout
         && m_state != InCompositingUpdate
-        && m_state != InUpdatePaintProperties
+        && m_state != InPrePaintTreeWalk
         && m_state != InPaint;
 }
 
@@ -208,7 +206,7 @@ inline bool DocumentLifecycle::stateAllowsDetach() const
         || m_state == LayoutClean
         || m_state == CompositingClean
         || m_state == PaintInvalidationClean
-        || m_state == UpdatePaintPropertiesClean
+        || m_state == PrePaintTreeWalkClean
         || m_state == PaintClean
         || m_state == Stopping;
 }
@@ -218,7 +216,7 @@ inline bool DocumentLifecycle::stateAllowsLayoutInvalidation() const
     return m_state != InPerformLayout
         && m_state != InCompositingUpdate
         && m_state != InPaintInvalidation
-        && m_state != InUpdatePaintProperties
+        && m_state != InPrePaintTreeWalk
         && m_state != InPaint;
 }