Rename Node::treeScope() to Node::treeScopeOrDocument()

third_party/WebKit/Source/core/html/HTMLSlotElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp b/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
index 156689e76873104ff6fec7eaa50a98d24490e829..09c52acbaaa635dc7d8669b13e5c1fe44060155c 100644
--- a/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLSlotElement.cpp
@@ -198,7 +198,7 @@ Node::InsertionNotificationRequest HTMLSlotElement::insertedInto(ContainerNode*
     if (ShadowRoot* root = containingShadowRoot()) {
         if (ElementShadow* rootOwner = root->owner())
             rootOwner->setNeedsDistributionRecalc();
-        if (root == insertionPoint->treeScope().rootNode())
+        if (root == insertionPoint->treeScopeOrDocument().rootNode())
             root->didAddSlot();
     }
 
@@ -222,7 +222,7 @@ void HTMLSlotElement::removedFrom(ContainerNode* insertionPoint)
     // Since this insertion point is no longer visible from the shadow subtree, it need to clean itself up.
     clearDistribution();
 
-    if (root == insertionPoint->treeScope().rootNode())
+    if (root == insertionPoint->treeScopeOrDocument().rootNode())
         root->didRemoveSlot();
 
     HTMLElement::removedFrom(insertionPoint);