From 9f28242def7718a5c3e04a61093890d504743010 Mon Sep 17 00:00:00 2001
From: Timothy Guan-tin Chien <timdream@gmail.com>
Date: Thu, 15 Nov 2018 06:52:01 +0000
Subject: [PATCH] Remove dom.webcomponents.customelements.enabled pref.

This patch removes the following functions:

* nsContentUtils::IsCustomElementsEnabled()
* CustomElementRegistry::IsCustomElementEnabled(JSContext* aCx, JSObject* aObject)
* CustomElementRegistry::IsCustomElementEnabled(nsIDocument* aDoc)

and all references of the pref.

Depends on D11183

Differential Revision: https://phabricator.services.mozilla.com/D11249
---
 components/style/gecko/non_ts_pseudo_class_list.rs | 2 +-
 components/style/gecko/selector_parser.rs          | 3 ---
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/components/style/gecko/non_ts_pseudo_class_list.rs b/components/style/gecko/non_ts_pseudo_class_list.rs
index f7d8be418de..cf21cbf8999 100644
--- a/components/style/gecko/non_ts_pseudo_class_list.rs
+++ b/components/style/gecko/non_ts_pseudo_class_list.rs
@@ -37,7 +37,7 @@ macro_rules! apply_non_ts_list {
                 ("visited", Visited, visited, IN_VISITED_STATE, _),
                 ("active", Active, active, IN_ACTIVE_STATE, _),
                 ("checked", Checked, checked, IN_CHECKED_STATE, _),
-                ("defined", Defined, defined, IN_DEFINED_STATE, PSEUDO_CLASS_ENABLED_IN_UA_SHEETS_AND_CHROME),
+                ("defined", Defined, defined, IN_DEFINED_STATE, _),
                 ("disabled", Disabled, disabled, IN_DISABLED_STATE, _),
                 ("enabled", Enabled, enabled, IN_ENABLED_STATE, _),
                 ("focus", Focus, focus, IN_FOCUS_STATE, _),
diff --git a/components/style/gecko/selector_parser.rs b/components/style/gecko/selector_parser.rs
index 039c069d2bb..1871d60a0b2 100644
--- a/components/style/gecko/selector_parser.rs
+++ b/components/style/gecko/selector_parser.rs
@@ -178,9 +178,6 @@ impl NonTSPseudoClass {
             NonTSPseudoClass::Fullscreen => unsafe {
                 mozilla::StaticPrefs_sVarCache_full_screen_api_unprefix_enabled
             },
-            NonTSPseudoClass::Defined => unsafe {
-                structs::nsContentUtils_sIsCustomElementsEnabled
-            },
             // Otherwise, a pseudo-class is enabled in content when it
             // doesn't have any enabled flag.
             _ => !self