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

Source/core/paint/EllipsisBoxPainter.h

Index: Source/core/paint/EllipsisBoxPainter.h
diff --git a/Source/core/paint/EllipsisBoxPainter.h b/Source/core/paint/EllipsisBoxPainter.h
index 8cb4d7a106f95dcbe60084521b6c39ec79ab284c..e44c8875b11e65e6595b41d5f32e65dbb872af06 100644
--- a/Source/core/paint/EllipsisBoxPainter.h
+++ b/Source/core/paint/EllipsisBoxPainter.h
@@ -5,6 +5,8 @@
 #ifndef EllipsisBoxPainter_h
 #define EllipsisBoxPainter_h
 
+#include "wtf/Allocator.h"
+
 namespace blink {
 
 struct PaintInfo;
@@ -18,6 +20,7 @@ class LayoutUnit;
 class ComputedStyle;
 
 class EllipsisBoxPainter {
+    STACK_ALLOCATED();
 public:
     EllipsisBoxPainter(EllipsisBox& ellipsisBox) : m_ellipsisBox(ellipsisBox) { }