Componentization: fix SupplementTracing<0>::~SupplementTracing<0>(void) already defined.

Source/core/dom/CSSSelectorWatch.h

Index: Source/core/dom/CSSSelectorWatch.h
diff --git a/Source/core/dom/CSSSelectorWatch.h b/Source/core/dom/CSSSelectorWatch.h
index 3351839d6b4075df1ae88e48a16a73e7f6100dda..7503f9c7c7262d76e2f64535a5916b05d0c45c45 100644
--- a/Source/core/dom/CSSSelectorWatch.h
+++ b/Source/core/dom/CSSSelectorWatch.h
@@ -33,7 +33,7 @@
 
 #include "core/CoreExport.h"
 #include "core/css/StyleRule.h"
-#include "core/dom/DocumentSupplementable.h"
+#include "core/dom/Document.h"
 #include "platform/Timer.h"
 #include "wtf/HashCountedSet.h"
 #include "wtf/HashSet.h"
@@ -43,7 +43,7 @@
 
 namespace blink {
 
-class CORE_EXPORT CSSSelectorWatch final : public NoBaseWillBeGarbageCollectedFinalized<CSSSelectorWatch>, public DocumentSupplement {
+class CORE_EXPORT CSSSelectorWatch final : public NoBaseWillBeGarbageCollectedFinalized<CSSSelectorWatch>, public WillBeHeapSupplement<Document> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(CSSSelectorWatch);
 public:
     virtual ~CSSSelectorWatch() { }