Use TreeScope::completeURL and baseURL instead of the Document versions

Source/core/html/HTMLAppletElement.cpp

Index: Source/core/html/HTMLAppletElement.cpp
diff --git a/Source/core/html/HTMLAppletElement.cpp b/Source/core/html/HTMLAppletElement.cpp
index 242e2ea2110e5537abe551532a048fd9f68d970b..cf30516371e50980a4d49b7e8e9024455d0afef4 100644
--- a/Source/core/html/HTMLAppletElement.cpp
+++ b/Source/core/html/HTMLAppletElement.cpp
@@ -127,7 +127,7 @@ void HTMLAppletElement::updateWidgetInternal()
 
     const AtomicString& codeBase = getAttribute(codebaseAttr);
     if (!codeBase.isNull()) {
-        KURL codeBaseURL = document().completeURL(codeBase);
+        KURL codeBaseURL = treeScope().completeURL(codeBase);
         paramNames.append("codeBase");
         paramValues.append(codeBase.string());
     }
@@ -148,7 +148,7 @@ void HTMLAppletElement::updateWidgetInternal()
     // attribute is set, then 'code' points to a class inside the archive, so we need to check the
     // url generated by resolving 'archive' against 'codebase'.
     KURL urlToCheck;
-    KURL rootURL = codeBase.isNull() ? document().url() : document().completeURL(codeBase);
+    KURL rootURL = codeBase.isNull() ? document().url() : treeScope().completeURL(codeBase);
     if (!archive.isNull())
         urlToCheck = KURL(rootURL, archive);
     else if (!code.isNull())
@@ -163,7 +163,7 @@ void HTMLAppletElement::updateWidgetInternal()
     }
 
     paramNames.append("baseURL");
-    KURL baseURL = document().baseURL();
+    KURL baseURL = treeScope().baseURL();
     paramValues.append(baseURL.string());
 
     const AtomicString& mayScript = getAttribute(mayscriptAttr);