Rename {Author,UserAgent}ShadowRoot to {Open,Closed}ShadowRoot.

Source/core/dom/SelectorQuery.cpp

Index: Source/core/dom/SelectorQuery.cpp
diff --git a/Source/core/dom/SelectorQuery.cpp b/Source/core/dom/SelectorQuery.cpp
index 455b1731cf28f8c74f7c78ed1b4cb3d7ae58b85f..3b8ab9a5b086c8a3a8abdcac9df48ddbb8be0a84 100644
--- a/Source/core/dom/SelectorQuery.cpp
+++ b/Source/core/dom/SelectorQuery.cpp
@@ -353,7 +353,7 @@ static ShadowRoot* authorShadowRootOf(const ContainerNode& node)
     ElementShadow* shadow = toElement(node).shadow();
     ASSERT(shadow);
     for (ShadowRoot* shadowRoot = shadow->oldestShadowRoot(); shadowRoot; shadowRoot = shadowRoot->youngerShadowRoot()) {
-        if (shadowRoot->type() == ShadowRoot::AuthorShadowRoot)
+        if (shadowRoot->type() == ShadowRoot::OpenShadowRoot)
             return shadowRoot;
     }
     return 0;
@@ -384,7 +384,7 @@ static ContainerNode* nextTraversingShadowTree(const ContainerNode& node, const
             return 0;
         if (ShadowRoot* youngerShadowRoot = shadowRoot->youngerShadowRoot()) {
             // Should not obtain any elements in user-agent shadow root.
-            ASSERT(youngerShadowRoot->type() == ShadowRoot::AuthorShadowRoot);
+            ASSERT(youngerShadowRoot->type() == ShadowRoot::OpenShadowRoot);
             return youngerShadowRoot;
         }