Client side display item cache flag

third_party/WebKit/Source/core/layout/LayoutObject.cpp

Index: third_party/WebKit/Source/core/layout/LayoutObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.cpp b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
index 9b54b8cf5f9b6d67a572ec41be4774138e0626f1..fadbac12370bb071567339e6f3ca718115603e5c 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
@@ -139,6 +139,7 @@ struct SameSizeAsLayoutObject {
     unsigned m_bitfields2;
     LayoutRect rect; // Stores the previous paint invalidation rect.
     LayoutPoint position; // Stores the previous position from the paint invalidation container.
+    unsigned cacheGeneration;
 };
 
 static_assert(sizeof(LayoutObject) == sizeof(SameSizeAsLayoutObject), "LayoutObject should stay small");
@@ -1278,8 +1279,7 @@ const LayoutBoxModelObject* LayoutObject::invalidatePaintRectangleInternal(const
 
 void LayoutObject::invalidatePaintRectangle(const LayoutRect& rect) const
 {
-    const LayoutBoxModelObject* paintInvalidationContainer = invalidatePaintRectangleInternal(rect);
-    if (paintInvalidationContainer) {
+    if (const LayoutBoxModelObject* paintInvalidationContainer = invalidatePaintRectangleInternal(rect)) {
         // Don't need to change the paint invalidation bounds of the client, so pass nullptr.
         invalidateDisplayItemClients(*paintInvalidationContainer, PaintInvalidationRectangle, nullptr);
     }