diff --git a/content/xslt/src/base/txURIUtils.cpp b/content/xslt/src/base/txURIUtils.cpp
index e3c2569ad99e..912215d37980 100644
--- a/content/xslt/src/base/txURIUtils.cpp
+++ b/content/xslt/src/base/txURIUtils.cpp
@@ -298,7 +298,7 @@ PRBool URIUtils::CanCallerAccess(nsIDOMNode *aNode)
     }
 
     if (!principal) {
-        doc->GetPrincipal(getter_AddRefs(principal));
+        principal = doc->GetPrincipal();
     }
 
     if (!principal) {
@@ -336,22 +336,18 @@ URIUtils::ResetWithSource(nsIDocument *aNewDoc, nsIDOMNode *aSourceNode)
         return;
     }
 
-    nsCOMPtr<nsILoadGroup> loadGroup;
     nsCOMPtr<nsIChannel> channel;
-    sourceDoc->GetDocumentLoadGroup(getter_AddRefs(loadGroup));
+    nsCOMPtr<nsILoadGroup> loadGroup = sourceDoc->GetDocumentLoadGroup();
     nsCOMPtr<nsIIOService> serv = do_GetService(NS_IOSERVICE_CONTRACTID);
     if (serv) {
         // Create a temporary channel to get nsIDocument->Reset to
         // do the right thing. We want the output document to get
         // much of the input document's characteristics.
-        nsCOMPtr<nsIURI> docURL;
-        sourceDoc->GetDocumentURL(getter_AddRefs(docURL));
-        serv->NewChannelFromURI(docURL, getter_AddRefs(channel));
+        serv->NewChannelFromURI(sourceDoc->GetDocumentURL(),
+                                getter_AddRefs(channel));
     }
     aNewDoc->Reset(channel, loadGroup);
-    nsCOMPtr<nsIURI> baseURL;
-    sourceDoc->GetBaseURL(getter_AddRefs(baseURL));
-    aNewDoc->SetBaseURL(baseURL);
+    aNewDoc->SetBaseURL(sourceDoc->GetBaseURL());
 
 }
 
diff --git a/content/xslt/src/xml/txXMLParser.cpp b/content/xslt/src/xml/txXMLParser.cpp
index b1d71bacb038..c14c80c005fd 100644
--- a/content/xslt/src/xml/txXMLParser.cpp
+++ b/content/xslt/src/xml/txXMLParser.cpp
@@ -81,10 +81,8 @@ txParseDocumentFromURI(const nsAString& aHref, const nsAString& aReferrer,
     nsCOMPtr<nsIDOMDocument> theDocument;
     nsCOMPtr<nsIDocument> loaderDocument =
         do_QueryInterface(aLoader->getNSObj());
-    nsCOMPtr<nsILoadGroup> loadGroup;
-    nsCOMPtr<nsIURI> loaderUri;
-    loaderDocument->GetDocumentLoadGroup(getter_AddRefs(loadGroup));
-    loaderDocument->GetDocumentURL(getter_AddRefs(loaderUri));
+    nsCOMPtr<nsILoadGroup> loadGroup = loaderDocument->GetDocumentLoadGroup();
+    nsIURI *loaderUri = loaderDocument->GetDocumentURL();
     NS_ENSURE_TRUE(loaderUri, NS_ERROR_FAILURE);
 
     nsCOMPtr<nsIChannel> channel;
diff --git a/content/xslt/src/xpath/Makefile.in b/content/xslt/src/xpath/Makefile.in
index 11ab87526aea..97e1f9741b95 100644
--- a/content/xslt/src/xpath/Makefile.in
+++ b/content/xslt/src/xpath/Makefile.in
@@ -34,6 +34,7 @@ REQUIRES	= string \
 ifndef TX_EXE
 REQUIRES +=	  dom \
 		  content \
+		  necko \
 		  widget \
 		  xpconnect \
 		  js \
diff --git a/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp b/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
index 1b71209a1274..4014ae7d4bf1 100644
--- a/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
+++ b/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
@@ -756,8 +756,7 @@ TX_CompileStylesheet(nsIDOMNode* aNode, txStylesheet** aStylesheet)
     }
 
     nsCOMPtr<nsIDocument> doc = do_QueryInterface(document);
-    nsCOMPtr<nsIURI> uri;
-    doc->GetBaseURL(getter_AddRefs(uri));
+    nsIURI *uri = doc->GetBaseURL();
     nsCAutoString baseURI;
     uri->GetSpec(baseURI);
 
diff --git a/content/xslt/src/xslt/txMozillaTextOutput.cpp b/content/xslt/src/xslt/txMozillaTextOutput.cpp
index 1142f5c86daa..8e3780aaa8cd 100644
--- a/content/xslt/src/xslt/txMozillaTextOutput.cpp
+++ b/content/xslt/src/xslt/txMozillaTextOutput.cpp
@@ -168,23 +168,19 @@ void txMozillaTextOutput::createResultDocument(nsIDOMDocument* aSourceDocument,
     }
 
     // Reset and set up document
-    nsCOMPtr<nsILoadGroup> loadGroup;
     nsCOMPtr<nsIChannel> channel;
     nsCOMPtr<nsIDocument> sourceDoc = do_QueryInterface(aSourceDocument);
-    sourceDoc->GetDocumentLoadGroup(getter_AddRefs(loadGroup));
+    nsCOMPtr<nsILoadGroup> loadGroup = sourceDoc->GetDocumentLoadGroup();
     nsCOMPtr<nsIIOService> serv = do_GetService(NS_IOSERVICE_CONTRACTID);
     if (serv) {
         // Create a temporary channel to get nsIDocument->Reset to
         // do the right thing. We want the output document to get
         // much of the input document's characteristics.
-        nsCOMPtr<nsIURI> docURL;
-        sourceDoc->GetDocumentURL(getter_AddRefs(docURL));
-        serv->NewChannelFromURI(docURL, getter_AddRefs(channel));
+        serv->NewChannelFromURI(sourceDoc->GetDocumentURL(),
+                                getter_AddRefs(channel));
     }
     doc->Reset(channel, loadGroup);
-    nsCOMPtr<nsIURI> baseURL;
-    sourceDoc->GetBaseURL(getter_AddRefs(baseURL));
-    doc->SetBaseURL(baseURL);
+    doc->SetBaseURL(sourceDoc->GetBaseURL());
 
     // Notify the contentsink that the document is created
     nsCOMPtr<nsITransformObserver> observer = do_QueryReferent(mObserver);
@@ -236,11 +232,7 @@ void txMozillaTextOutput::createResultDocument(nsIDOMDocument* aSourceDocument,
             return;
         }
 
-        rv = doc->SetRootContent(rootContent);
-        NS_ASSERTION(NS_SUCCEEDED(rv), "Failed to set the root content");
-        if (NS_FAILED(rv)) {
-            return;
-        }
+        doc->SetRootContent(rootContent);
 
         mDocument->CreateElementNS(XHTML_NSURI,
                                    NS_LITERAL_STRING("head"),
diff --git a/content/xslt/src/xslt/txMozillaXMLOutput.cpp b/content/xslt/src/xslt/txMozillaXMLOutput.cpp
index c8a6b9a01ca2..280e5ed1dc7f 100644
--- a/content/xslt/src/xslt/txMozillaXMLOutput.cpp
+++ b/content/xslt/src/xslt/txMozillaXMLOutput.cpp
@@ -208,16 +208,14 @@ void txMozillaXMLOutput::endDocument()
 
     if (!mRefreshString.IsEmpty()) {
         nsCOMPtr<nsIDocument> doc = do_QueryInterface(mDocument);
-        nsCOMPtr<nsIScriptGlobalObject> sgo;
-        doc->GetScriptGlobalObject(getter_AddRefs(sgo));
+        nsIScriptGlobalObject *sgo = doc->GetScriptGlobalObject();
         if (sgo) {
             nsCOMPtr<nsIDocShell> docShell;
             sgo->GetDocShell(getter_AddRefs(docShell));
             nsCOMPtr<nsIRefreshURI> refURI = do_QueryInterface(docShell);
             if (refURI) {
-                nsCOMPtr<nsIURI> baseURI;
-                doc->GetBaseURL(getter_AddRefs(baseURI));
-                refURI->SetupRefreshURIFromHeader(baseURI, mRefreshString);
+                refURI->SetupRefreshURIFromHeader(doc->GetBaseURL(),
+                                                  mRefreshString);
             }
         }
     }
@@ -739,8 +737,7 @@ txMozillaXMLOutput::createResultDocument(const nsAString& aName, PRInt32 aNsID,
     }
 
     // Set up script loader of the result document.
-    nsCOMPtr<nsIScriptLoader> loader;
-    doc->GetScriptLoader(getter_AddRefs(loader));
+    nsIScriptLoader *loader = doc->GetScriptLoader();
     if (loader) {
         if (mNotifier) {
             loader->AddObserver(mNotifier);
@@ -904,9 +901,8 @@ txTransformNotifier::SignalTransformEnd()
 
     // XXX Need a better way to determine transform success/failure
     if (mDocument) {
-        nsCOMPtr<nsIScriptLoader> loader;
         nsCOMPtr<nsIDocument> doc = do_QueryInterface(mDocument);
-        doc->GetScriptLoader(getter_AddRefs(loader));
+        nsIScriptLoader *loader = doc->GetScriptLoader();
         if (loader) {
             loader->RemoveObserver(this);
         }