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

third_party/WebKit/Source/core/css/SelectorChecker.cpp

Index: third_party/WebKit/Source/core/css/SelectorChecker.cpp
diff --git a/third_party/WebKit/Source/core/css/SelectorChecker.cpp b/third_party/WebKit/Source/core/css/SelectorChecker.cpp
index c5d4b4d515eda624e7418022b8cb6f4f8eaf742e..0140854f1df6e0361e066df07bc356014298b44a 100644
--- a/third_party/WebKit/Source/core/css/SelectorChecker.cpp
+++ b/third_party/WebKit/Source/core/css/SelectorChecker.cpp
@@ -104,7 +104,7 @@ static Element* parentElement(const SelectorChecker::SelectorCheckingContext& co
     //   e.g. shadowRoot.querySelector(':host *'),
     //   (a) context.element has the same treescope as context.scope, need to walk up to its shadow host.
     //   (b) Otherwise, should not walk up from a shadow root to a shadow host.
-    if (context.scope && (context.scope == context.element->containingShadowRoot() || context.scope->treeScope() == context.element->treeScope()))
+    if (context.scope && (context.scope == context.element->containingShadowRoot() || context.scope->treeScopeOrDocument() == context.element->treeScopeOrDocument()))
         return context.element->parentOrShadowHostElement();
     return context.element->parentElement();
 }
@@ -116,7 +116,7 @@ static const HTMLSlotElement* findSlotElementInScope(const SelectorChecker::Sele
 
     const HTMLSlotElement* slot = context.element->assignedSlot();
     while (slot) {
-        if (slot->treeScope() == context.scope->treeScope())
+        if (slot->treeScopeOrDocument() == context.scope->treeScopeOrDocument())
             return slot;
         slot = slot->assignedSlot();
     }
@@ -129,7 +129,7 @@ static bool scopeContainsLastMatchedElement(const SelectorChecker::SelectorCheck
     if (!context.scope)
         return true;
 
-    if (context.scope->treeScope() == context.element->treeScope())
+    if (context.scope->treeScopeOrDocument() == context.element->treeScopeOrDocument())
         return true;
 
     // Because Blink treats a shadow host's TreeScope as a separate one from its descendent shadow roots,
@@ -348,7 +348,7 @@ SelectorChecker::Match SelectorChecker::matchForRelation(const SelectorCheckingC
             if (!m_isUARule && !m_isQuerySelector && context.selector->getPseudoType() == CSSSelector::PseudoShadow)
                 Deprecation::countDeprecation(context.element->document(), UseCounter::CSSSelectorPseudoShadow);
             // If we're in the same tree-scope as the scoping element, then following a shadow descendant combinator would escape that and thus the scope.
-            if (context.scope && context.scope->shadowHost() && context.scope->shadowHost()->treeScope() == context.element->treeScope())
+            if (context.scope && context.scope->shadowHost() && context.scope->shadowHost()->treeScopeOrDocument() == context.element->treeScopeOrDocument())
                 return SelectorFailsCompletely;
 
             Element* shadowHost = context.element->shadowHost();