change the dump code to dump in UTF8 so we can reduce unnecessary assertion when we turn on nsString

data corruption code

dom/src/base/nsGlobalWindow.cpp

@@ -1088,7 +1088,7 @@ NS_IMETHODIMP GlobalWindowImpl::GetScrollY(PRInt32* aScrollY)
 
 NS_IMETHODIMP GlobalWindowImpl::Dump(const nsString& aStr)
 {
-   char *cstr = aStr.ToNewCString();
+   char *cstr = aStr.ToNewUTF8String();
   
 #ifdef XP_MAC
    // have to convert \r to \n so that printing to the console works