Remove OS_CHROMEOS from ui/ash code

chrome/browser/ui/ash/launcher/extension_launcher_context_menu.cc

Index: chrome/browser/ui/ash/launcher/extension_launcher_context_menu.cc
diff --git a/chrome/browser/ui/ash/launcher/extension_launcher_context_menu.cc b/chrome/browser/ui/ash/launcher/extension_launcher_context_menu.cc
index 4614b30a78c46ce453b46ed2e900c0bea34daf91..87b20400834674a4c6ccbadb064144dca25f55e8 100644
--- a/chrome/browser/ui/ash/launcher/extension_launcher_context_menu.cc
+++ b/chrome/browser/ui/ash/launcher/extension_launcher_context_menu.cc
@@ -85,11 +85,11 @@ void ExtensionLauncherContextMenu::Init() {
     if (item().type == ash::TYPE_PLATFORM_APP)
       AddPinMenu();
     bool show_close_button = controller()->IsOpen(item().id);
-#if defined(OS_CHROMEOS)
     if (extension_misc::IsImeMenuExtensionId(
-            controller()->GetAppIDForShelfID(item().id)))
+            controller()->GetAppIDForShelfID(item().id))) {
       show_close_button = false;
-#endif
+    }
+
     if (show_close_button)
       AddItemWithStringId(MENU_CLOSE, IDS_LAUNCHER_CONTEXT_MENU_CLOSE);
   }