Bug 1021466 - Part 1: Make it possible to stash opener and newly created TabParent's inside DocShell. r=smaug.

docshell/base/nsDocShell.cpp

@@ -13053,3 +13053,29 @@ nsDocShell::SetInvisible(bool aInvisible)
 {
     mInvisible = aInvisible;
 }
+
+void
+nsDocShell::SetOpener(nsITabParent* aOpener)
+{
+  mOpener = do_GetWeakReference(aOpener);
+}
+
+nsITabParent*
+nsDocShell::GetOpener()
+{
+  nsCOMPtr<nsITabParent> opener(do_QueryReferent(mOpener));
+  return opener;
+}
+
+void
+nsDocShell::SetOpenedRemote(nsITabParent* aOpenedRemote)
+{
+  mOpenedRemote = do_GetWeakReference(aOpenedRemote);
+}
+
+nsITabParent*
+nsDocShell::GetOpenedRemote()
+{
+  nsCOMPtr<nsITabParent> openedRemote(do_QueryReferent(mOpenedRemote));
+  return openedRemote;
+}