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

Source/core/xml/XMLHttpRequest.cpp

Index: Source/core/xml/XMLHttpRequest.cpp
diff --git a/Source/core/xml/XMLHttpRequest.cpp b/Source/core/xml/XMLHttpRequest.cpp
index 2c97108fa97ab88f4ef97c45626aca8d53a694a7..557cdc4006ba438ae11275d37eaf9b5617f3ca67 100644
--- a/Source/core/xml/XMLHttpRequest.cpp
+++ b/Source/core/xml/XMLHttpRequest.cpp
@@ -312,7 +312,7 @@ ArrayBuffer* XMLHttpRequest::responseArrayBuffer(ExceptionCode& ec)
     return m_responseArrayBuffer.get();
 }
 
-void XMLHttpRequest::setTimeout(unsigned long timeout, ExceptionCode& ec)
+void XMLHttpRequest::setTimeout(unsigned timeout, ExceptionCode& ec)
 {
     // FIXME: Need to trigger or update the timeout Timer here, if needed. http://webkit.org/b/98156
     // XHR2 spec, 4.7.3. "This implies that the timeout attribute can be set while fetching is in progress. If that occurs it will still be measured relative to the start of fetching."