Apply FINAL to the RenderObject hierarchy.

Source/core/rendering/RenderFileUploadControl.h

Index: Source/core/rendering/RenderFileUploadControl.h
diff --git a/Source/core/rendering/RenderFileUploadControl.h b/Source/core/rendering/RenderFileUploadControl.h
index 34d160422fc7b15ee21f6d14a51fc8d10aab1366..b19bfe5cf3e43991fb70507e90ba44a4531b5c38 100644
--- a/Source/core/rendering/RenderFileUploadControl.h
+++ b/Source/core/rendering/RenderFileUploadControl.h
@@ -31,7 +31,7 @@ class HTMLInputElement;
 // sufficient space to draw a file icon and filename. The RenderButton has a shadow node
 // associated with it to receive click/hover events.
 
-class RenderFileUploadControl : public RenderBlock {
+class RenderFileUploadControl FINAL : public RenderBlock {
 public:
     RenderFileUploadControl(HTMLInputElement*);
     virtual ~RenderFileUploadControl();