Cleanup bitfield accessors for slimming paint v2

Source/core/layout/LayoutBlockFlow.cpp

Index: Source/core/layout/LayoutBlockFlow.cpp
diff --git a/Source/core/layout/LayoutBlockFlow.cpp b/Source/core/layout/LayoutBlockFlow.cpp
index 22dbcd85698ad21450b151b46042fa3f1f1c1f76..7197ab8f70abb3834613aa3b76c7815541240e83 100644
--- a/Source/core/layout/LayoutBlockFlow.cpp
+++ b/Source/core/layout/LayoutBlockFlow.cpp
@@ -315,7 +315,7 @@ void LayoutBlockFlow::layoutBlock(bool relayoutChildren)
             hasVisibleContent = layer->hasVisibleContent();
         }
         if (hasVisibleContent)
-            setShouldInvalidateOverflowForPaint(true);
+            setShouldInvalidateOverflowForPaint();
     }
 
     if (isHTMLDialogElement(node()) && isOutOfFlowPositioned())
@@ -386,7 +386,7 @@ inline bool LayoutBlockFlow::layoutBlockFlow(bool relayoutChildren, LayoutUnit &
     }
 
     if (shouldBreakAtLineToAvoidWidow()) {
-        setEverHadLayout(true);
+        setEverHadLayout();

[leviw_travelin_and_unemployed, 2015/08/20 22:52:02]

This doesn't seem related to Slimming Paint v2 (not that I don't think it's a
good change, just that you may want to change your title)

         return false;
     }