Backout of 7f28c1084c47 (bug 1319111) for security checks breakage, r=me

docshell/base/nsDocShell.cpp

@@ -11168,12 +11168,6 @@ nsDocShell::DoURILoad(nsIURI* aURI,
 
   if (aOriginalURI) {
     channel->SetOriginalURI(aOriginalURI);
-    // The LOAD_REPLACE flag and its handling here will be removed as part
-    // of bug 1319110.  For now preserve its restoration here to not break
-    // any code expecting it being set specially on redirected channels.
-    // If the flag has originally been set to change result of
-    // NS_GetFinalChannelURI it won't have any effect and also won't cause
-    // any harm.
     if (aLoadReplace) {
       uint32_t loadFlags;
       channel->GetLoadFlags(&loadFlags);