Fix style errors in core/xml/.

Source/core/xml/XMLHttpRequest.h

Index: Source/core/xml/XMLHttpRequest.h
diff --git a/Source/core/xml/XMLHttpRequest.h b/Source/core/xml/XMLHttpRequest.h
index a6227e21df7209ead0aebd029c98b0708aacf9c0..5025564c31942736111080fbf992324ee74ddc31 100644
--- a/Source/core/xml/XMLHttpRequest.h
+++ b/Source/core/xml/XMLHttpRequest.h
@@ -53,7 +53,12 @@ class ThreadableLoader;
 
 typedef int ExceptionCode;
 
-class XMLHttpRequest FINAL : public RefCountedWillBeRefCountedGarbageCollected<XMLHttpRequest>, public ScriptWrappable, public XMLHttpRequestEventTarget, private ThreadableLoaderClient, public ActiveDOMObject {
+class XMLHttpRequest FINAL
+    : public RefCountedWillBeRefCountedGarbageCollected<XMLHttpRequest>
+    , public ScriptWrappable
+    , public XMLHttpRequestEventTarget
+    , private ThreadableLoaderClient
+    , public ActiveDOMObject {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     REFCOUNTED_EVENT_TARGET(XMLHttpRequest);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(XMLHttpRequest);