Use "int" instead of "long" for bindings where the WebIDL uses "long".

Source/core/xml/XPathResult.cpp

Index: Source/core/xml/XPathResult.cpp
diff --git a/Source/core/xml/XPathResult.cpp b/Source/core/xml/XPathResult.cpp
index 4a20e451b48e64ec834050d2c60acc7c6860b334..f7db0e4b37c5910d4a27935ef9ba11acafde9aa9 100644
--- a/Source/core/xml/XPathResult.cpp
+++ b/Source/core/xml/XPathResult.cpp
@@ -167,7 +167,7 @@ bool XPathResult::invalidIteratorState() const
     return m_document->domTreeVersion() != m_domTreeVersion;
 }
 
-unsigned long XPathResult::snapshotLength(ExceptionCode& ec) const
+unsigned XPathResult::snapshotLength(ExceptionCode& ec) const
 {
     if (resultType() != UNORDERED_NODE_SNAPSHOT_TYPE && resultType() != ORDERED_NODE_SNAPSHOT_TYPE) {
         ec = TypeError;
@@ -199,7 +199,7 @@ Node* XPathResult::iterateNext(ExceptionCode& ec)
     return node;
 }
 
-Node* XPathResult::snapshotItem(unsigned long index, ExceptionCode& ec)
+Node* XPathResult::snapshotItem(unsigned index, ExceptionCode& ec)
 {
     if (resultType() != UNORDERED_NODE_SNAPSHOT_TYPE && resultType() != ORDERED_NODE_SNAPSHOT_TYPE) {
         ec = TypeError;