diff --git a/mozilla/xpcom/proxy/public/nsProxyEvent.h b/mozilla/xpcom/proxy/public/nsProxyEvent.h
index eb9b9b3288b..9e4da16623a 100644
--- a/mozilla/xpcom/proxy/public/nsProxyEvent.h
+++ b/mozilla/xpcom/proxy/public/nsProxyEvent.h
@@ -95,8 +95,6 @@ public:
     nsISupports*        GetRealObject();
     nsIEventQueue*      GetQueue();
     PRInt32             GetProxyType() const { return mProxyType; }
-    
-    PRLock* GetLock() const { return mLock; }
 
 private:
     
@@ -106,9 +104,7 @@ private:
     
     nsCOMPtr<nsISupports>     mRealObject;       /* the non-proxy object that this event is referring to. 
                                                     This is a strong ref. */
-    PRLock                    *mLock;
 
-    
     nsresult convertMiniVariantToVariant(nsXPTMethodInfo   * methodInfo, 
                                          nsXPTCMiniVariant * params, 
                                          nsXPTCVariant     **fullParam, 
diff --git a/mozilla/xpcom/proxy/src/nsProxyEvent.cpp b/mozilla/xpcom/proxy/src/nsProxyEvent.cpp
index c871cf67bbf..9669b268da1 100644
--- a/mozilla/xpcom/proxy/src/nsProxyEvent.cpp
+++ b/mozilla/xpcom/proxy/src/nsProxyEvent.cpp
@@ -215,7 +215,6 @@ nsProxyObject::nsProxyObject(nsIEventQueue *destQueue, PRInt32 proxyType, nsISup
     mRealObject      = realObject;
     mDestQueue       = do_QueryInterface(destQueue);
     mProxyType       = proxyType;
-    mLock            = PR_NewLock();
 }
 
 
@@ -230,7 +229,6 @@ nsProxyObject::nsProxyObject(nsIEventQueue *destQueue, PRInt32  proxyType, const
 
     mDestQueue       = do_QueryInterface(destQueue);
     mProxyType       = proxyType;
-    mLock            = PR_NewLock();
 }
 
 nsProxyObject::~nsProxyObject()
@@ -240,7 +238,6 @@ nsProxyObject::~nsProxyObject()
     
     mRealObject = 0;
     mDestQueue  = 0;
-    PR_DestroyLock(mLock);
 }
 
 // GetRealObject