Pass implementation object to supplemental classes by reference

Source/core/dom/CSSSelectorWatch.cpp

Index: Source/core/dom/CSSSelectorWatch.cpp
diff --git a/Source/core/dom/CSSSelectorWatch.cpp b/Source/core/dom/CSSSelectorWatch.cpp
index b6ac2e331e2ff202a8f614e8f9acbf2279b8e76c..cccd63651005dedfbb09a698c9aea93ef4c0bad6 100644
--- a/Source/core/dom/CSSSelectorWatch.cpp
+++ b/Source/core/dom/CSSSelectorWatch.cpp
@@ -54,10 +54,10 @@ CSSSelectorWatch::CSSSelectorWatch(Document& document)
 
 CSSSelectorWatch& CSSSelectorWatch::from(Document& document)
 {
-    CSSSelectorWatch* watch = static_cast<CSSSelectorWatch*>(DocumentSupplement::from(&document, kSupplementName));
+    CSSSelectorWatch* watch = static_cast<CSSSelectorWatch*>(DocumentSupplement::from(document, kSupplementName));
     if (!watch) {
         watch = new CSSSelectorWatch(document);
-        DocumentSupplement::provideTo(&document, kSupplementName, adoptPtr(watch));
+        DocumentSupplement::provideTo(document, kSupplementName, adoptPtr(watch));
     }
     return *watch;
 }