Make classes and structures in core/paint fast-allocated.

Source/core/paint/TableSectionPainter.h

Index: Source/core/paint/TableSectionPainter.h
diff --git a/Source/core/paint/TableSectionPainter.h b/Source/core/paint/TableSectionPainter.h
index 80163c47cead2147a38959accb2906c5fd7dd4cd..7460c98b2e42fc44f2c1e0c69c6ab82bdffdcda6 100644
--- a/Source/core/paint/TableSectionPainter.h
+++ b/Source/core/paint/TableSectionPainter.h
@@ -5,6 +5,8 @@
 #ifndef TableSectionPainter_h
 #define TableSectionPainter_h
 
+#include "wtf/Allocator.h"
+
 namespace blink {
 
 class LayoutPoint;
@@ -13,6 +15,7 @@ class LayoutTableSection;
 struct PaintInfo;
 
 class TableSectionPainter {
+    STACK_ALLOCATED();
 public:
     TableSectionPainter(LayoutTableSection& layoutTableSection) : m_layoutTableSection(layoutTableSection) { }