1 files changed, 0 insertions, 23 deletions
diff --git a/toolkit/modules/LightweightThemeConsumer.jsm b/toolkit/modules/LightweightThemeConsumer.jsm
index 4010a9ff22..9419fdcf23 100644
--- a/toolkit/modules/LightweightThemeConsumer.jsm
+++ b/toolkit/modules/LightweightThemeConsumer.jsm
@@ -147,29 +147,6 @@ LightweightThemeConsumer.prototype = {
         footer.removeAttribute("lwthemefooter");
     }
 
-#if defined(XP_MACOSX) && defined(MOZ_CAN_DRAW_IN_TITLEBAR)
-    // On OS X, we extend the lightweight theme into the titlebar, which means setting
-    // the chromemargin attribute. Some XUL applications already draw in the titlebar,
-    // so we need to save the chromemargin value before we overwrite it with the value
-    // that lets us draw in the titlebar. We stash this value on the root attribute so
-    // that XUL applications have the ability to invalidate the saved value.
-    if (stateChanging) {
-      if (!root.hasAttribute("chromemargin-nonlwtheme")) {
-        root.setAttribute("chromemargin-nonlwtheme", root.getAttribute("chromemargin"));
-      }
-
-      if (active) {
-        root.setAttribute("chromemargin", "0,-1,-1,-1");
-      } else {
-        let defaultChromemargin = root.getAttribute("chromemargin-nonlwtheme");
-        if (defaultChromemargin) {
-          root.setAttribute("chromemargin", defaultChromemargin);
-        } else {
-          root.removeAttribute("chromemargin");
-        }
-      }
-    }
-#endif
     Services.obs.notifyObservers(this._win, "lightweight-theme-window-updated",
                                  JSON.stringify(aData));
   }