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

Source/core/paint/FileUploadControlPainter.h

Index: Source/core/paint/FileUploadControlPainter.h
diff --git a/Source/core/paint/FileUploadControlPainter.h b/Source/core/paint/FileUploadControlPainter.h
index af51afce6e3b2796157d3854ced6b1823b0d687d..f4da10602d0d64728584f89bb704e13d1604510a 100644
--- a/Source/core/paint/FileUploadControlPainter.h
+++ b/Source/core/paint/FileUploadControlPainter.h
@@ -5,6 +5,8 @@
 #ifndef FileUploadControlPainter_h
 #define FileUploadControlPainter_h
 
+#include "wtf/Allocator.h"
+
 namespace blink {
 
 struct PaintInfo;
@@ -12,6 +14,7 @@ class LayoutPoint;
 class LayoutFileUploadControl;
 
 class FileUploadControlPainter {
+    STACK_ALLOCATED();
 public:
     FileUploadControlPainter(LayoutFileUploadControl& layoutFileUploadControl) : m_layoutFileUploadControl(layoutFileUploadControl) { }